I. What does “packaged for use in deposition systems” mean?
“Packaged for use in deposition systems” usually means that the chemical is not sold simply for ordinary laboratory bottle opening and manual sampling, but is instead packaged, delivered, and documented according to the usage scenario of thin-film deposition equipment. Common examples are precursors for ALD, CVD, and related deposition processes. Merck classifies such products as “Precursors Packaged for Deposition Systems” and states that they are “safely and conveniently pre-filled in robust stainless steel containers,” equipped with precision valves to enable controlled delivery of the material into the deposition chamber.
What this specification emphasizes is not “one fixed assay value,” but rather the complete set of use attributes oriented toward deposition equipment: chemical + packaging container + delivery interface + cleanliness control + safe delivery. Whether a product is suitable in practice depends on the product documentation and the specific indicators stated there, such as assay, trace metals, water, particles, halides, thermal stability, and container compatibility.
II. When a product is labeled “packaged for use in deposition systems,” what does it usually indicate?
“Packaged for use in deposition systems” indicates that the product has been designed in a commercial form that can enter the deposition equipment use chain, rather than being supplied only in ordinary packaging suitable for opening and sampling on the lab bench. This usually implies several layers of meaning, as outlined below.
Meaning | Explanation |
Intended for deposition process use | Common in precursor supply scenarios for ALD, CVD, MOCVD, and related processes |
Container/valve design is more suitable for equipment connection | Often highlights cylinders, ampoules, precision valves, connection methods, or delivery modes |
Greater emphasis on contamination control | Moisture, oxygen, particles, metallic impurities, and halide residues are often key indicators |
Greater emphasis on delivery stability | Not only chemical purity, but also stable evaporation, transport, and reproducibility are required |
Supporting documentation is commonly provided | COA, COO, datasheets, and safety information are often important for selection decisions |
This specification is not equivalent to “one fixed purity grade” | It is more a packaging/delivery description oriented toward use in deposition equipment; the actual assay must still be checked product by product and cannot be judged from the label alone |
Therefore, from the perspective of actual process implementation, the commercialization focus of such precursors is no longer limited to the molecule itself, but also includes delivery-related factors such as packaging, interfaces, transportation and storage, contamination control, and equipment compatibility. What it emphasizes is not only “whether the chemical is pure enough,” but also “whether it can be delivered into deposition equipment in a stable, safe, and clean manner and used reproducibly.”
The practical significance of this specification is that it extends the conventional idea of “chemical purity” to the level of “whether the material can be delivered and used in a stable, safe, and low-contamination way in real deposition equipment.” For advanced deposition precursors, this is often more relevant to process reality than a single purity percentage alone.
III. Why does “packaged for use in deposition systems” exist?
1) Deposition precursors are highly sensitive to the mode of delivery
Many deposition precursors need to enter the reaction chamber stably in vapor form. Supplier documentation often highlights cylinders, ampoules, valves, heated zones, carrier gas or vapor delivery modes, and compatibility with the deposition system. For solid precursors, sublimation behavior, temperature window, and condensation in delivery lines must also be controlled.
2) Contamination control must extend across the entire delivery chain
For deposition precursors, the actual cleanliness of delivered material does not depend only on the manufacturing stage. It can also be affected by the packaging container, transportation and storage, method of system connection, gas supply conditions, and filtration configuration. The ChemGuard handbook from Merck / Versum shows that, for some supply scenarios involving moisture-sensitive chemicals, the equipment side may recommend low-moisture, low-oxygen gas sources together with submicron filtration, for example conditions such as Water <10 ppb, O₂ <2 ppm, and 0.003 μm filters.
3) In scenarios with high requirements for high cleanliness, closed delivery, and point-to-point supply, ordinary glass bottles and conventional repackaging methods may not be the most suitable solution
In such scenarios, packaging, transfer, and the fluid path can all affect particles, metal contamination, and delivery stability. This does not mean that all precursors are unsuitable for glass bottles. Rather, it emphasizes that when a process has reached a stage with high cleanliness requirements and stringent equipment-connection demands, ordinary glass bottles and conventional repackaging methods may no longer be the optimal choice.
4) Many precursors themselves are highly reactive
Examples such as diethylzinc, trimethylaluminum, silicon tetrachloride, and some metal alkoxides or metal amide precursors are often highly sensitive to air, moisture, material compatibility, and valve sealing. If they are handled according to ordinary laboratory sampling logic, both risk and the chance of contamination increase significantly.
5) Modern processes place greater emphasis on supply formats that are “ready for direct tool use”
Whether a precursor can be loaded onto equipment often depends on factors such as container type, valve form, connection method, whether heating is required, whether the material is supplied in a cylinder, ampoule, or canister, and whether it is compatible with the existing delivery cabinet or pipeline system. Treating package, delivery, and support as part of one continuous precursor commercialization workflow shows that packaging itself has become part of the process delivery capability.
IV. Common Testing Indicators for Products “Packaged for Use in Deposition Systems”
Indicator | Common Method / Unit | Main Significance |
Assay / Main content | GC, titration, etc.; % | Used to determine whether the content of the principal chemical meets product requirements |
Trace metals | ICP-MS; ppb or ppm | Metal contamination can directly affect film electrical properties, defect rate, and process stability |
Water | Karl Fischer; ppm | Especially critical for air- and moisture-sensitive precursors |
Halides / Chloride, etc. | ppb or ppm | Very important for certain oxide, nitride, and dielectric films, as well as for equipment corrosion risk |
Particle counts | PMS/LPC, etc. | Related to deposition defects, particle contamination, and yield |
Appearance / appearance, color | Visual inspection or colorimetry | Used for basic batch-to-batch consistency assessment |
Major element confirmation | ICP or other elemental analysis | Used to confirm that the main component is correct |
Carbon / ligand-related content | Elemental analysis, etc. | Very common for some organometallic precursors |
Vapor delivery related data / vapor pressure, sublimation behavior, boiling point/melting point, thermal stability | Vapor pressure measurement, thermal analysis, or other physical property tests | Determines whether the precursor can stably generate and maintain a controllable vapor flux under the target temperature and pressure; also affects sublimation, condensation, delivery stability, and run-to-run reproducibility on equipment |
In general, the core items that are usually checked first are main content/identity confirmation, water content, and data related to volatility and thermal behavior. Whether trace metals, halide residues, particles, residual carbon, or ligand-related indicators need to be specially emphasized depends more on the specific precursor system and process requirements. In addition, overall judgment should also be made in combination with the COA, SDS, and compatibility of the container, valve, and interface.
V. When is it necessary to choose “packaged for use in deposition systems”?
When your work has already moved into actual deposition equipment delivery, this type of product should usually be considered first, rather than starting from ordinary laboratory-packaged reagents. The following are scenarios in which this type of product is generally worth prioritizing:
Scenario | Should it be prioritized? | Reason |
Direct supply to ALD/CVD/MOCVD equipment | Yes | Requires compatibility between the container, valve, delivery mode, and the equipment |
Air- and moisture-sensitive precursors | Yes | Ordinary bottle opening and transfer are more likely to introduce moisture/oxygen and increase safety risks |
Processes requiring continuous operation, reproducibility, and batch-to-batch consistency | Yes | These products place greater emphasis on stable delivery and supporting documentation |
Cleanroom / semiconductor-related process development | Yes | Greater emphasis is placed on particles, metal impurities, and clean delivery |
Only ordinary flask synthesis or general wet-chemical reactions | Not necessarily | If no equipment connection is involved, ordinary high-purity packaging may already be sufficient; the key is to examine the product COA indicators |
Only routine Sol-Gel wet-process precursor solution preparation | Depends | Some of the same chemicals can be used both in Sol-Gel and in deposition, but if they are not supplied directly to equipment, this packaging format may not be strictly necessary |
It should be noted that two different questions must be distinguished:
Whether a material can be used for film formation and whether it needs to be supplied in a deposition-system-oriented format. A precursor such as TTIP, for example, can be used both in Sol-Gel routes and in thin-film deposition applications. Therefore, if the experiment is still at the stage of benchtop solution preparation and conventional wet-process fabrication, it is not always necessary to choose the “packaged for use in deposition systems” specification. Whether this specification is needed should instead be judged mainly on the basis of the equipment delivery mode, the cleanliness requirements for delivery, and the supporting documentation.
VI. Common FAQs
Q1: Is it equivalent to “electronic grade” or “semiconductor grade”?
It should not be treated as directly equivalent. “Packaged for use in deposition systems” is a product description that emphasizes packaging, delivery, and the equipment-use scenario, rather than a unified industry grade. Many such products are indeed intended for electronic materials or semiconductor deposition use, but whether they meet the required electronic-grade, semiconductor-grade, or other internal standards must still be verified case by case through the product COA, key impurity indicators, and container/interface compatibility.
Q2: Is it necessarily purer than an ordinary reagent?
These products usually place greater emphasis on purification and clean delivery, but they do not guarantee a uniformly higher purity value. The specific indicators must still be checked against the product COA.
Q3: Which items should be the focus during selection?
It is recommended to focus on: main content, trace metals, water, particles, key anions/residues, and container/interface compatibility. At the same time, attention should also be paid to the COA, COO, SDS, whether heated delivery is required, and whether the product matches the existing equipment.
Q4: If I am doing Sol-Gel or general wet-process experiments, do I also need this type of specification?
Not necessarily. If the process does not involve direct equipment delivery, and the specification of the ordinary packaging already meets the experimental requirements, then this product format may not be necessary. However, if you are especially concerned about moisture, particles, closed transfer, or future transition to deposition equipment, choosing this type of packaging is a more prudent option.
Q5: How can “packaged for use in deposition systems” be summarized briefly?
Packaged for use in deposition systems” is a supplier product description that emphasizes a precursor’s ability to be delivered in a clean, safe, compatible, and controllable manner for deposition-equipment applications; when selecting such a product, the specific datasheet and COA must be reviewed carefully, with particular attention to assay, water content, trace metals, particles, critical residues, and compatibility between the container and the equipment.
VII. Aladdin “Packaged for Use in Deposition Systems” Precursor Product Navigation Table (Tables 1–4)
Current research task or experimental goal | Typical film / material direction of interest | Why this type of task should prioritize the “packaged for use in deposition systems” specification | Which table to consult first | Navigation notes |
Want to carry out deposition of SiO₂, SiOₓ, siloxane networks, or organosilicon-related films | Silicon dioxide films, silicon oxide layers, low-k organosilicon layers, surface silicon-oxide-modified layers | Such experiments are usually conducted directly on deposition equipment such as ALD / CVD / PECVD. The precursor must not only have suitable chemical reactivity, but also meet requirements for equipment feeding, vapor delivery, impurity control, and packaging compatibility. Therefore, choosing the “packaged for use in deposition systems” specification is more consistent with real process conditions. | Table 1 | Table 1 brings together silicon sources such as TEOS, SiCl₄, amino silanes, and cyclosiloxanes. It is a good starting point for questions such as how to choose a silicon source, whether the oxygen content is appropriate, and whether the precursor is more suitable for SiO₂ or organosilicon films. |
Want to screen silicon precursors suitable for low-temperature deposition or interfacial layer construction | Low-temperature Si-based films, surface modification layers, Si–N / Si–C–N-containing films | Low-temperature deposition often depends even more strongly on stable precursor delivery and controllable reaction behavior within a narrow process window. If the packaging and delivery mode are not well matched, the effects of moisture, contamination, and unstable feeding can be amplified. For this reason, deposition-system-packaged products should be prioritized. | Table 1 | Table 1 includes not only classical oxygen-containing silicon sources, but also amino silanes and organosiloxane precursors, making it suitable for comparing differences in reactivity, film type, and process window among various silicon precursors. |
Want to prepare HfO₂, ZrO₂, Hf–Zr–O, or other high-k dielectric films | Gate dielectrics, DRAM capacitor dielectrics, interfacial dielectric layers | Research on high-k dielectric layers usually imposes strict requirements on impurities, reproducibility, and film uniformity. When the precursor is intended for use in real deposition equipment, packaging, delivery stability, and low-contamination control directly affect dielectric performance and interface quality, so deposition-system specifications should be considered first. | Table 2 | Table 2 focuses on Hf / Zr precursors and is the most suitable starting point for high-k dielectric material selection. If your priority is dielectric constant, leakage current, interface quality, or Hf/Zr mixed systems, this table should be consulted first. |
Want to prepare TiO₂, TiN, or other titanium-based films | Titanium oxide, titanium nitride, TiO_xN_y, related mixed oxides | Titanium precursors are often used in deposition processes that are sensitive to temperature, reaction window, and delivery conditions. If the goal is to evaluate real film-formation behavior, choosing deposition-system-packaged products first makes it easier to ensure that the precursor enters the experimental system in a manner close to actual equipment use. | Table 2 | Table 2 includes both titanium alkoxides and titanium amide precursors, making it convenient to compare oxide-oriented versus nitride-oriented routes and to judge suitability in combination with deposition temperature and reaction conditions. |
Want to identify common precursors for high-k dielectric layers and transition-metal oxides | HfO₂, ZrO₂, TiO₂, etc. | In this type of research, the goal is often not merely to verify whether a reaction can occur, but to compare film-formation windows, interface quality, and process reproducibility. Using products packaged for deposition systems therefore reflects the logic of real thin-film process selection more accurately. | Table 2 | If your task is not limited to a single element but instead involves overall comparison of high-k or transition-metal oxide precursors, Table 2 is the best first entry point. |
Want to prepare Al₂O₃ films, passivation layers, or interfacial protective layers | Al₂O₃, encapsulation passivation layers, interfacial modification layers, coating layers | Al₂O₃ deposition is commonly carried out directly by ALD. Highly reactive precursors such as TMA place very high demands on safe delivery, closed packaging, and water/oxygen control. Therefore, prioritizing the “packaged for use in deposition systems” specification is more consistent with both experimental safety and process stability requirements. | Table 3 | Table 3 includes TMA, the most typical aluminum precursor of this kind. If your experimental goal is classical ALD Al₂O₃, surface coating, or interfacial layers, Table 3 is usually the most direct place to start. |
Want to prepare GaN, Ga₂O₃, or other gallium-based semiconductors / epitaxial materials | III–V epitaxy, GaN, β-Ga₂O₃, films related to optoelectronic and power devices | Gallium precursors are often used directly in MOCVD or other vapor-phase deposition equipment. The research focus is usually on delivery stability, growth rate, and epitaxial quality, so products already supplied for deposition-system use should be prioritized. | Table 3 | The trimethylgallium and triethylgallium in Table 3 are suitable for this type of research. If you are concerned with epitaxy, growth activity, or precursor reactivity differences, Table 3 should be consulted first. |
Want to prepare ZnO or other transparent oxide-related films | ZnO, transparent conductive / semiconducting oxides, low-temperature oxide deposition | Such experiments usually involve comparing film uniformity, low-temperature deposition capability, and interface quality. If the precursor is packaged and supplied for deposition systems, it is easier to evaluate its performance in real equipment applications in a stable manner. | Table 3 | The diethylzinc in Table 3 is a representative precursor for ZnO systems and is suitable for quickly locating candidates for low-temperature oxide and transparent electronic material research. |
Want to prepare Y₂O₃, VOₓ, or other functional oxides / doping layers | Rare-earth oxides, vanadium oxides, functional dielectric layers, films related to energy storage / catalysis | Functional oxides are often sensitive to film uniformity, impurity background, and doping reproducibility. If the goal is real thin-film development in deposition equipment, consulting deposition-system specifications first makes the experimental results more consistent with process-application scenarios. | Table 3 | Table 3 includes not only Al / Ga / Zn precursors, but also yttrium- and vanadium-based precursors for more functional-oxide-oriented applications, making it suitable for identifying materials for special functional layers or doping layers. |
Want to prepare Ta₂O₅, TaN, NbOₓ, NbN, and other high-dielectric or barrier-layer films | Diffusion barrier layers, high-k dielectric layers, functional metal nitrides / oxides | Films based on these refractory metals are often used in critical device layers and therefore require higher standards for precursor delivery stability, impurity control, and equipment compatibility. Prioritizing deposition-system specifications is thus more consistent with real research and process development needs. | Table 4 | Table 4 focuses on refractory-metal-related precursors such as Ta / Nb / W and is more suitable for research on barrier layers, layers adjacent to electrodes, and high-k-related systems. |
Want to prepare W, WOₓ, WNₓ, or other tungsten-containing films | Refractory metal films, tungsten-containing functional layers, barrier layers, sensing-related tungsten oxides | Tungsten precursors often involve higher-temperature windows, special reaction pathways, or stricter equipment delivery requirements. Products packaged for deposition systems are therefore more helpful for stable evaluation of their suitability in real deposition processes. | Table 4 | Table 4 includes both tungsten hexacarbonyl and tungsten amide / imido precursors, making it suitable for comparing the applicability of different tungsten sources for metallic tungsten, tungsten oxide, or tungsten nitride routes. |
Want to prioritize the search for precursors for refractory metals, diffusion barriers, and high-temperature-stable films | Ta-, Nb-, and W-related systems | This type of research is usually closer to real deposition-equipment development than to ordinary wet-chemistry reagent screening. For this reason, deposition-system-packaged products are more valuable as references in terms of delivery mode, process integration, and contamination control. | Table 4 | If your question is more about how to choose refractory-metal precursors in general, rather than focusing on a specific molecule, starting directly with Table 4 will save the most time. |
At present, only know that you want to prepare “oxide films,” but have not yet decided on the elemental system | SiO₂, HfO₂, ZrO₂, TiO₂, Al₂O₃, ZnO, Y₂O₃, VOₓ, etc. | When research is still in the precursor-screening stage, consulting deposition-system-packaged products first helps bring equipment usability, delivery stability, and process compatibility into the evaluation earlier, rather than staying only at the level of molecular structure. | Consult Tables 1–3 first | For silicon oxides, start with Table 1; for high-k and transition-metal oxides, start with Table 2; for Al₂O₃, ZnO, or functional oxides, start with Table 3. |
At present, only know that you want to prepare “metal / barrier-layer / high-k-related films,” but have not yet determined the specific metal | Ta-, Nb-, and W-related systems | Such tasks usually lead ultimately to comparison of real deposition routes. Prioritizing deposition-system-packaged products helps guide screening from the outset around equipment delivery and film-formation compatibility. | Consult Table 4 first | Table 4 is more oriented toward refractory metals and barrier-layer uses commonly encountered in engineering practice and is therefore a suitable starting point for this type of selection. |
Table 1 | Precursors for Silicon-Based Films and Organosilicon / Siloxane-Network Deposition
Category | Aladdin Catalog No. | Name | CAS No. | Grade or Purity | Product Features and Applications |
Silicon-based oxide / organosilicon film deposition precursor | Tetraethyl orthosilicate | 78-10-4 | Packaged for use in deposition systems | A classic oxygen-containing silicon source, commonly used in precursor development for ALD / CVD / PECVD of SiO₂, doped silicates, porous silica, and organosilicon films. | |
Silicon-based oxide / organosilicon film deposition precursor | Silicon tetrachloride | 10026-04-7 | Packaged for use in deposition systems | A classical chlorosilane precursor suitable as a high-purity silicon source for the development of silicon-based films, chlorosilane processes, and related CVD delivery systems; it requires strict control of equipment compatibility and moisture. | |
Silicon-based oxide / organosilicon film deposition precursor | Tris(dimethylamino)silane | 15112-89-7 | Packaged for use in deposition systems | A commonly used amino silane precursor with good volatility and reactivity, suitable for deposition of SiN_x, SiC_xN_y, and other low-temperature silicon-based films. | |
Silicon-based oxide / organosilicon film deposition precursor | 2,4,6,8-Tetramethylcyclotetrasiloxane | 2370-88-9 | Packaged for use in deposition systems | A cyclic methylsiloxane-type precursor suitable as a vapor-phase silicon source for organosilicon / siloxane films or surface silicon-oxide modification; commonly used in low-temperature deposition systems and in siloxane network construction studies. | |
Silicon-based oxide / organosilicon film deposition precursor | Tris(tert-butoxy)silanol | 18166-43-3 | Packaged for use in deposition systems | An oxygen-rich organosilicon precursor suitable for studies on deposition of Si–O-type films, siloxane networks, and surface hydroxyl-containing silicon layers; it is also commonly used in screening precursor reactivity and film-formation windows. |
Table 2 | Hf / Zr / Ti Precursors for High-k Dielectric and Oxide / Nitride Deposition
Category | Aladdin Catalog No. | Name | CAS No. | Grade or Purity | Product Features and Applications |
Hf / Zr high-k dielectric and oxide deposition precursor | Hafnium(IV) tert-butoxide | 2172-02-3 | Packaged for use in deposition systems | A volatile hafnium alkoxide precursor commonly used for deposition of HfO₂ and other hafnium-containing films; a representative material in high-k dielectric precursor screening. | |
Hf / Zr high-k dielectric and oxide deposition precursor | Tetrakis(ethylmethylamido)hafnium(IV) | 352535-01-4 | Packaged for use in deposition systems | A classical liquid hafnium amide precursor commonly used for deposition of HfO₂ and Hf–Zr–O high-k dielectric films; suitable for studies on gate dielectrics and storage dielectric layers. | |
Hf / Zr high-k dielectric and oxide deposition precursor | Tetrakis(dimethylamido)hafnium(IV) | 19782-68-4 | Packaged for use in deposition systems | A commonly used hafnium amide precursor with a well-established reaction window, suitable for deposition of HfO₂ high-k dielectric films and related nanoscale layered structures. | |
Hf / Zr high-k dielectric and oxide deposition precursor | Zirconium(IV) tert-butoxide | 2081-12-1 | Packaged for use in deposition systems | A commonly used zirconium alkoxide precursor suitable for ALD / CVD / solution-to-vapor process development of ZrO₂ and other zirconium-containing films; also applicable to low-temperature oxide deposition studies. | |
Hf / Zr high-k dielectric and oxide deposition precursor | Bis(methyl-η⁵-cyclopentadienyl)methoxymethylzirconium | —— | Packaged for use in deposition systems | An advanced zirconium precursor commonly used for ALD of ZrO₂ high-k films; suitable for process development of gate dielectrics, DRAM capacitor dielectrics, and interfacial layers. | |
Hf / Zr high-k dielectric and oxide deposition precursor | Tetrakis(dimethylamido)zirconium(IV) | 19756-04-8 | Packaged for use in deposition systems | A commonly used zirconium amide precursor suitable for ZrO₂ high-k dielectric films, zirconium-containing oxides, and pairing with Hf–Zr mixed-system precursors. | |
Titanium-based oxide / nitride deposition precursor | Titanium(IV) isopropoxide | 546-68-9 | Packaged for use in deposition systems | A classical titanium alkoxide precursor commonly used in ALD / CVD / solution-to-vapor deposition studies of TiO₂ and related mixed oxide films. | |
Titanium-based oxide / nitride deposition precursor | Tetrakis(diethylamido)titanium(IV) | 4419-47-0 | Packaged for use in deposition systems | A titanium amide precursor suitable for deposition studies of TiO₂ and some TiN / TiO_xN_y films; commonly used in process development requiring relatively low deposition temperatures. | |
Titanium-based oxide / nitride deposition precursor | Tetrakis(dimethylamido)titanium(IV) | 3275-24-9 | Packaged for use in deposition systems | A classical titanium amide precursor that can be used for ALD of TiO₂ films and is also common in TiN precursor routes; a representative material in titanium-based deposition systems. |
Table 3 | Al / Ga / Zn and Functional Oxide Deposition Precursors
Category | Aladdin Catalog No. | Name | CAS No. | Grade or Purity | Product Features and Applications |
Aluminum-based dielectric / functional film deposition precursor | Trimethylaluminum (TMA) | 75-24-1 | Packaged for use in deposition systems | A classical highly reactive aluminum precursor commonly used for ALD of Al₂O₃ films; a representative precursor for deposition of gate dielectrics, interfacial layers, passivation layers, and coating layers. It requires strict attention to delivery safety and water/oxygen control. | |
Gallium / zinc-based semiconductor and oxide deposition precursor | T432113 | Trimethylgallium | 1445-79-0 | Packaged for use in deposition systems | A highly reactive gallium source commonly used for deposition of GaN epitaxy, blue LEDs / lasers, and gallium-based films such as β-Ga₂O₃. |
Gallium / zinc-based semiconductor and oxide deposition precursor | T475958 | Triethylgallium | 1115-99-7 | Packaged for use in deposition systems | A commonly used gallium source suitable for MOCVD precursor development of GaN, Ga₂O₃, and other gallium-based film / epitaxial systems; comparatively milder in reactivity than trimethylgallium. |
Gallium / zinc-based semiconductor and oxide deposition precursor | Diethylzinc | 557-20-0 | Packaged for use in deposition systems | A classical zinc precursor commonly used together with water or oxygen sources to deposit ZnO films; a representative precursor in transparent oxide and low-temperature ALD ZnO systems. | |
Rare-earth / vanadium-based functional oxide deposition precursor | T432711 | Tris[N,N-bis(trimethylsilyl)amide]yttrium | 41836-28-6 | Packaged for use in deposition systems | A rare-earth organometallic precursor suitable for deposition of Y₂O₃ and other yttrium-containing functional oxides / doped films, used in studies of dielectric, buffer, or optoelectronic functional layers. |
Rare-earth / vanadium-based functional oxide deposition precursor | Vanadium(V) oxytriisopropoxide | 5588-84-1 | Packaged for use in deposition systems | A commonly used vanadium oxo-alkoxide precursor suitable for deposition of vanadium oxide films, applicable to the development of functional oxides related to electronics, catalysis, and energy storage. |
Table 4 | Ta / Nb / W Precursors for Refractory Metals, Barrier Layers, and High-k-Related Deposition
Category | Aladdin Catalog No. | Name | CAS No. | Grade or Purity | Product Features and Applications |
Refractory metal and barrier-layer deposition precursor | Tris(diethylamido)(tert-butylimido)tantalum(V) | 169896-41-7 | Packaged for use in deposition systems | A classical tantalum precursor commonly used for deposition of Ta₂O₅, TaN, and related diffusion-barrier / high-k films. | |
Refractory metal and barrier-layer deposition precursor | Tris(diethylamido)(tert-butylimido)niobium(V) | 210363-27-2 | Packaged for use in deposition systems | A commonly used niobium precursor suitable for deposition of NbO_x, NbN, and related high-k or barrier-layer films. | |
Refractory metal and barrier-layer deposition precursor | Bis(tert-butylimino)bis(dimethylamino)tungsten(VI) | 406462-43-9 | Packaged for use in deposition systems | A commonly used tungsten amide / imido precursor suitable for deposition of W, WN_x, or tungsten-containing films; a representative material in screening refractory-metal precursors. | |
Refractory metal and barrier-layer deposition precursor | Tungsten hexacarbonyl | 14040-11-0 | Packaged for use in deposition systems | A volatile tungsten(0) carbonyl precursor commonly used in ALD / CVD studies of W or WO_x films, and also applicable to the development of functional tungsten oxide layers and sensing films. |
For more related articles, please see below:
Semiconductor-Grade Reagents: What They Are and When to Use Them
ALD and CVD: Differences between Precision and High-Throughput Thin Film Deposition