We are looking for a source of silicon wafer for the purposes of eutectic die attach trials. If so we would be interested in wafers with no back metallisation wafers and thin gold for eutectic trials. The thickness of the wafers is not critical so something in the 375um region would be suitable. Our requirement would be only low quantities, one or two off 4 or 6” wafer would suffice. Could you provide a quote for this please?
Gold Coated Silicon Wafers for Research & Production
What are Au Coated Wafers Used For Eutectic Die Attach Trials.?
A researcher requested a quote for the following:
Reference #202495 for specs and pricing.
UniversityWafer, Inc's Silicon wafers with gold deposited onto the surface are used in soft lithography for micro and nanoscale patterning. Gold-coated silicon wafers offer a much wider range of applications. They can be used in nanotechnology, silicon wafer surface with gold thin filmbiotechnology, and thin-film research applications. They are coated with 50 nm pure gold, which makes them ideal for a variety of nanotechnology applications.
Applications include:
- Nanotechnology
- Biotechnology
- AFM applications.
Deposition Technique: Electron Beam
Deposition Rate: 1-2 Å/sec
Vapor Pressure: 10-6 Torr
Adhesion Layer: Cr (99.99%)
Get Your Gold Coated Silicon Quote FAST! Or, Buy Online and Start Researching Today!
How to Grow Zinc Oxide (ZnO) Nanowires with Gold (Au) Coated Silicon Wafers
We are planning to grow ZnO nanowires in a tube furnace via vapor-liquid-solid method, facilitated by carbothermal reduction. The Au overlayer acts as a catalyst/seed for the ZnO growth. At high temp it melts/beads and forms a eutectic with Zn and facilitates the growth of vertically aligned nanowires. The underlying substrate does not need to be Si, but it is a convenient choice.
Our research client used the following Silicon specs:
2" Undoped Silicon (100) >100 ohm-cm SSP 280um Prime Grade with 10nm Au
Reference #259887
Pollen Grains Grown Gold Coated Silicon Wafers
Researchers have used ultra-flat silicon wafers with a thin gold coating
Researcher:
This will serve as a specimen mount for pollen grains, so as long as the surface is micron-scale flat and made of silicon and has the right diameter and thickness I think that does it. We will gold coat the pollen grains on the Si wafer after we place them there, using a sputter-coater.
UniversityWafer, Inc. Quoted:
Si-Wafers, 1" (25.4 mm) diameter, 2mm thick, undoped, very flat surface Qty.10
Reference #260088 for pricing.
Au Coated Undoped Silicon Wafers to Fabricate Nanowires
A Professor of Physics requested a quote for the following:
I'm looking for a 2inch wafer of Si, undoped should be fine. I'm not too concerned about the specifics of the Si, it's the gold overlayer that is important for my needs (we are doing VLS growth of ZnO nanowires in a tube furnace and the sputtered gold layer acts as a seed layer/catalyst).
Are you also able to dice the wafer after sputtering?
Reference #259887 for specs and pricing.
What Gold (Au) Coated Silicon Wafers are used for Research & Production
We have gold coated Si wafers and we can deposit gold onto most any substrate. A thin layer of titanium (Ti) is used as an adhesion layer so the gold easily bonds to the single crystal silicon wafer.
Please email the specs and quantity that you would like.
Research Client Asks:
I need some gold-coated Si wafers. Gold thickness between 50-200 nm either sputtered or evaporated would be fine. These will be diced so wafer size is not critical - please use the below as a guide but let me know what you have in stock and/or what gives the best area/$. Could you please send me prices for: 1 x 4" wafer 10 x 4" wafer 1 x 6" wafer Are you able to offer a wafer dicing service for these? If so, please let me know the cost for dicing into 10x10 mm squares.
I only care about one side having a well-adhered gold layer – this is for an electrochemical sensor application. In the past I have always used something like: Boron doped 10-100 Ohm-cm <100> SSP, usually with 200 or 300 nm of a thermal oxide. In this application I don’t think the oxide layer is actually necessary.
UniversityWafer, Inc.'s Response:
The following wafers will work:
Si Item #1432
100mm P/B <100> 1-10 ohm-cm 500um SSP Prime
Si Item #3495
150mm P/B <100> 1-30 ohm-cm 620-675um SSP Prime with 300nm of Thermal Oxide
What Gold-Coated Silicon Wafers are used for Electrochemical Biosensor Application?
A doctoral student requested the following quote:
I am looking to purchase gold-coated silicon wafers for an electrochemical biosensor application. We have used gold wafers in the past with 5nm Cr layer, 100nm Au layer, however these thicknesses are not strict and we can go thicker (maybe up to 500nm Au layer). I was wondering what purity of gold would the final product be, and the surface smoothness? Thanks for your help, a quote would be great (let's say for 50 wafers).
We don’t have any requirements on Si doping (we are just using the Si as a base layer as we only want electron transfer through the gold layer). When we do our photolithography, we’d also have an Su8 passivation layer. The gold coated glass slides we’ve used in the past are 99.9% pure gold)!
We want to go ahead with a quote for the Silicon wafers with 5nm Cr / 100nm Au (these are 4” I presume). Are there any discounts for certain bulk orders? We might want to start with something like 12 to keep the cost down as we experiment.
UniversityWafer, Inc. Quoted:
Our lot charge for in-situ sputter etch followed by sputter deposition of 5nm Cr and 100nm Au
Our lot charge for in-situ sputter etch followed by sputter deposition of 5nm Cr and 500nm Au is 980 (for a lot of 9 wafers, 100mm dia)
Reference #256983 for specs and pricing.
What Are Gold Coated Silicon Wafers Used For?
Gold-coated silicon wafers are highly versatile materials. These substrates can be used in nanotechnology, 
biotechnology, and thin-film research applications. They are coated with 50 nm pure gold. The gold-coated silicon wafers are available in 10mm and 15mm sizes. The wafers are individually packaged in trays. They are ideal for a variety of nanotechnology applications.
Gold-coated silicon wafers have numerous applications in the nanotechnology and precision imaging industries. These semiconductors have near-total reflectivity in the IR region and are ideal for IR spectroscopy. The material can be coated onto glass and mica for microscopy-grade applications. To find out more about the applications of gold-coated silicon wafers, contact us today.
In electrochemistry applications, silicon wafers can be functionalized with gold. The ultra-thin gold coating is a convenient solution due to its useful electronic properties and exceptional planarity. Platypus Technologies' gold-coated silicon wafers are used to test key reaction mechanisms, analyze the performance of desalination membranes, and establish the differential resistance between polyamide films. For example, a semiconductor is made up of layers of semiconductors that can be manipulated by varying the amount of gold.
The application of gold-coated silicon wafers is almost limitless. The metallic adhesion layer dampens the plasmonic response, and organic layers may undermine the stability of the film and inhibit the regeneration of nanostructures. To make gold-coated silicon wafers, a silicon wafer is scratched and the thin layer of Au is deposited on the surface. The resulting Au film is highly transparent and can be used for a variety of applications.
In addition to being a useful material in electrochemistry, gold-coated silicon is also a useful metal for use in other applications. For example, Platypus Technologies' gold-coated silicon wafers have been used in various industrial settings to assess key reactions and electrochemical phenomena. It has even been used to test the performance of desalination membranes. Additionally, it has been widely utilized in the field of nanoimprinting.
A thin gold-coated silicon wafer is the underlying surface for microelectronic devices. Its unique 
semiconducting properties enable it to be engineered for specific charge-carrying capabilities. These devices are used in electrochemical research. The most common application for a gold-coated silicon is a plasmonic-active layer in a microelectronic device.
Gold-coated silicon wafers are an excellent option for electrochemical research. They can be etched to create a gold-coated film on a silicon wafer. They are also ideal for nanoimprinting applications. Besides microelectronic devices, they can also be used in nanotechnology. These products are also useful in microscopy. A thin gold film is useful for high-resolution microscopy.
The gold-coated silicon wafers are ideal for electrochemistry and nanoelectronics. They have a unique set of semiconducting properties. Because of this, they can be used as electrodes for a variety of applications. A number of different electrochemical experiments have been performed on these silicon wafers. Aside from nanoelectronics, they have also been used in biomedical research.
Researchers are using gold-coated silicon wafers for research in nanotechnology. They will be used to study a variety of nanoscale applications. Their unique semiconducting properties enable them to be used as electrodes for a wide range of applications. Among these is electrochemical impedance spectroscopy. This method is a complex one, but it provides detailed insights into many electrochemical processes.
The silver-coated silicon wafers are a good choice for research. The gold-coated silicon wafers are ideal for nanoscale manufacturing. They are also excellent for research. If you are looking to conduct an electrochemical experiment, you can contact UniversityWafer, Inc. in California. All of its wafers are available in a range of sizes. They are great for demonstrating the electrochemical characteristics of a semiconductor.
Another benefit of gold-coated silicon wafers is their high-sensitivity. They are more sensitive than the standard silicon wafers. They have the same sensitivity as a standard silicon. They can be fabricated in small batches. These materials are extremely durable and are ideal for high-speed electronics. This means that they can be easily integrated with other types of devices. If you need to make a small chip, you can use the gold-coated silicon in a production process.
Gold Coated Undoped Silicon for Spectroscopy
The following undoped silicon wafer was used to fabricate a highly reflective layer of evaporated gold onto the wafer's polished surface. It is used for for spectroscopy experiments.
50.8mm Undoped Undoped <100> >10000 280um DSP Prime
What are Gold Coated Silicon Wafers Used for?
Gold-coated silicon wafers are used in a variety of applications, including microelectronics, photovoltaics, and sensors.
Microelectronics
In microelectronics, gold-coated silicon wafers are used as a substrate for the fabrication of electronic devices such as transistors, diodes, and integrated circuits. The gold coating provides a good electrical conductivity and a stable surface for the deposition of other materials.
Photovoltaics
In photovoltaics, gold-coated silicon wafers are used as a substrate for the fabrication of solar cells. The gold coating helps to improve the efficiency of the solar cell by reflecting unwanted wavelengths of light back into the cell and by providing an efficient electrical contact.
Sensors
In sensors, gold-coated silicon wafers are used as a substrate for the fabrication of sensors such as pressure sensors, temperature sensors, and humidity sensors. The gold coating provides a stable surface for the deposition of sensitive materials and helps to improve the sensitivity and accuracy of the sensor.
Overall, gold-coated silicon wafers are used in a variety of applications due to their good electrical conductivity, stability, and ability to reflect unwanted wavelengths of light.
Fabricating Gold (Au) Nanoparticles Film On Silicon (Si) Wafer By Self-Assembly
Gold nanoparticles (AuNPs) distributed on solid substrates have attracted a lot of attention in recent years, especially in the field of nanotechnology. The number of gold nanoparticle ordered arrays (NAPs) and their applications has increased in recent years due to their potential use in a wide range of applications in electronics, medical devices and other fields of science and technology, as well as in medicine and medicine. [Sources: 2, 4]
This invention has the advantage of low cost and can offer a wide range of applications in electronics, medical devices and other fields of science and medicine. Not only that, it can be used as a potential material in the ser-reinforcing effect and preferably has a strong binding force, similar to that of gold nanowires. The gold nanograins are produced by using a gold nanoparticle film on a silicon wafer, a solid substrate. [Sources: 8]
As shown in Fig. 5, today's inventors have successfully demonstrated that their technology performs the selective self-assembly of the gold nanoparticles. They have also demonstrated the ability to functionalize the gold nanoparticles by using different types of ligands, polymers and biomolecules. This supramolecular approach is similar to that of Xu and his colleagues, who used gold nanograins in their film. [Sources: 0, 6, 9]
This dispersibility behaviour will give graphene oxide particles the ability to be incorporated into polymer matrices for thin film production. [Sources: 5]
A graphene oxide film can be reduced, like electrons, by graphene oxide layers. A thin layer is available on various substrates such as glass, quartz, PET and Si. SiO2 on the substrate wafer and facilitates the formation of monolayer nanoparticles by keeping them close to the surface. It has been proposed that graphene oxides can be applied naturally to a substrate such as silicon wafer, glass or quartz or PET-Si and be accessible to people involved in nuclear microscopy studies. [Sources: 5, 9]
The native oxides can be removed to produce controllable and repeatable oxidized silicon substrates. MPTMS functionalizes silicon wafers and functionalized silicon substrate and minimizes the need to replace CTAB-capped gold nanorodes with thiols. This promotes the ability to position removable silicone oxide - enriched silicon on its substrate. [Sources: 2, 10]
The removal of the native oxide layer from the BOE solution immediately before the deposition of sputtering leads to an ultra-thin infiltration threshold, i.e. a surface tension gradient of less than 0.5 mm / S. S., London. This environment induces a thin film of liquid that begins to climb the substrate surface due to the surface tensions and gradients that occur on the film surface. [Sources: 9, 10]
The following procedures were performed according to the literature and the contact angle of 89 degrees was determined when the silicon wafer was treated with MPTMS. This indicates the hydrophobic character of the substrate, probably due to imperfections in MP tMS sam. The use of a thin liquid film with a surface tension gradient of less than 0.5 mm was used to minimize the number of defects on the APTES monolayer that may appear as intrinsic wafer defects. [Sources: 1, 2]
The characterization of the MPTMS-grafted silicon wafer was performed by scanning electron microscopy under high vacuum conditions. The sample consisted of nanosquared hole templates produced by electron beam lithography by exposing a 20 nm HSQ resistor. These holes were filled with 8 - 9 nm gold nanoparticles, which were assembled using a spread-mediated and directed self-assembly technique. For comparison with the nanoparticle, a thin film of graphene oxide was used to functionalize the substrate, which was produced by means of a magnetron sputter reactor. To investigate the properties of GO thin films GO under near-infrared laser light, chemically and thermally reduced graphene oxides were produced using a simple vacuum filtration method and presented to GO. [Sources: 0, 2, 5, 9]
The self-assembly of GNRD is structured by solvent evaporation in combination with a silicone oxide-enriched substrate. The honeycomb structure - patterned thin layers of gold nanoparticles on the silicon wafer - was achieved by colloidal lithography on a solution surface and its structure was determined by electromagnetic resonance spectroscopy (EMS) under near-infrared laser light. [Sources: 2, 7]
Gold nanoparticles (AuNPs) of uniform size were produced using organic amines as size control reagents and reduction reagents. As shown in Fig. 3, a hexagonal lattice guided by a 9 nm gold nanoparticle was used as a substrate for self-assembly of GNRD on a silicon wafer. [Sources: 9]
The process has been optimized and no gold chipping has been observed during the deposit, and step B shows that the layers of the nanoparticle layer have climbed and spread on the substrate micromeniscus [10]. Based on our experiments, as shown in Fig. 3, the result of self-assembly of GNRD on a silicon wafer with a hexagonal lattice of 9 nm gold nanoparticles is a bonded gold pattern on an oxidised 100% silicone wafer. [Sources: 3, 9, 10]
Sources:
[0]: https://www.frontiersin.org/articles/10.3389/fchem.2016.00008/full
[1]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7153467/
[2]: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0195859
[3]: https://nanoscalereslett.springeropen.com/articles/10.1186/1556-276X-6-167
[4]: https://www.tandfonline.com/doi/full/10.1080/17458080.2018.1520399
[5]: http://lescelebrites.fr/3m6sddepa/graphene-oxide-film.html
[6]: https://www.sciencedaily.com/releases/2014/06/140609140940.htm
[7]: http://macfruver.com/1n2ozp/crystalline-tint-reddit.html
[8]: https://www.google.com/patents/CN102978592A?cl=en
[9]: https://patents.google.com/patent/WO2017018946A1/en
[10]: https://www.spiedigitallibrary.org/journals/journal-of-micro-nanolithography-mems-and-moems/volume-16/issue-01/014502/Fabrication-of-ultrahigh-aspect-ratio-silicon-nanostructures-using-self-assembled/10.1117/1.JMM.16.1.014502.full