Substrates for Thin Film Deposition 

Thin film deposition substrates play a critical role in semiconductor fabrication, MEMS, photonics, optics, solar cells, and advanced materials research. UniversityWafer supplies high-quality silicon wafers, Borofloat® 33 glass, sapphire wafers, fused quartz, and other specialty substrates for PVD, CVD, ALD, sputtering, evaporation, and epitaxial growth. Whether you need standard substrates or custom wafer specifications, we can provide materials optimized for your thin film deposition process.

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Borofloat® 33 Glass Substrates for Thin Film Deposition

Borofloat® 33 glass is a popular substrate for thin film deposition because of its excellent surface flatness, low thermal expansion, high optical transmission, and chemical durability. It is commonly used for optical coatings, MEMS devices, biomedical research, sensors, and microelectronics.

A Ph.D. researcher requested the following Borofloat® 33 substrate for a thin film deposition project:

Research Request:

We need inexpensive Borofloat 33 glass wafers for thin film deposition. Can you send us a quote for 100 mm × 500 µm DSP, quantity 25?

Reference #91234 for specifications and pricing.

Whether you need Borofloat® 33, fused quartz, sapphire, silicon, or other specialty substrates, UniversityWafer supplies wafers for PVD, CVD, ALD, sputtering, evaporation, and research-scale thin film deposition projects.

Get Your Quote FAST! Or, Buy Online and start researching today!





Silver-Coated Silicon Wafers for Thin Film Deposition

Silver-coated silicon wafers are widely used for plasmonics, biosensors, photonics, surface-enhanced Raman spectroscopy (SERS), reflective coatings, and semiconductor research. Silver films deposited by sputtering, evaporation, or other PVD processes provide excellent electrical conductivity and optical reflectivity.

A graduate researcher requested the following:

Research Request:

We are looking for silver-coated silicon wafers with approximately 100 nm Ag film thickness or greater. Any silicon wafer specification is acceptable, including dopant, orientation, or diameter. The deposited silver film may be produced using sputtering, evaporation, or another suitable thin film deposition process.

Please provide information on available silver-coated silicon substrates and applicable deposition options.

What is Thin Film Deposition?

Thin film deposition is the process of depositing a thin layer of material onto a substrate to modify its electrical, optical, mechanical, or chemical properties. Thin films typically range from a few nanometers to several micrometers in thickness and are essential in semiconductor manufacturing, MEMS devices, photonics, solar cells, sensors, optical coatings, and biomedical technologies.

The performance of a deposited film depends on both the deposition process and the substrate material. Researchers commonly select silicon, sapphire, quartz, glass, silicon carbide (SiC), gallium arsenide (GaAs), or oxide-coated wafers based on thermal stability, lattice matching, electrical properties, and surface finish.

Common Thin Film Deposition Methods

Physical Vapor Deposition (PVD)

Physical Vapor Deposition creates thin films by transferring atoms from a solid source to the substrate inside a vacuum chamber. PVD processes produce dense, high-purity coatings with excellent adhesion.

  • Sputtering
  • Electron Beam Evaporation
  • Thermal Evaporation
  • Ion Beam Deposition

PVD is widely used for depositing metals, transparent conductive films, optical coatings, and semiconductor materials.

Chemical Vapor Deposition (CVD)

Chemical Vapor Deposition forms thin films through chemical reactions between gaseous precursors at the substrate surface. CVD provides excellent conformality on complex structures and is commonly used in integrated circuits, MEMS, photonics, and protective coatings.

Popular CVD processes include:

  • LPCVD
  • PECVD
  • MOCVD
  • Atmospheric Pressure CVD

Atomic Layer Deposition (ALD)

Atomic Layer Deposition (ALD) is an advanced deposition technique that deposits one atomic layer at a time. ALD provides exceptional thickness control, excellent conformality, and uniform coatings on high aspect ratio structures, making it ideal for advanced semiconductor devices and nanotechnology research.

Best Substrates for Thin Film Deposition

Substrate Typical Applications
Silicon Wafers Semiconductors, MEMS, integrated circuits, sensors
Borofloat 33 Glass Optical coatings, biomedical devices, microfluidics
Fused Quartz UV optics, high-temperature processing, spectroscopy
Sapphire LEDs, GaN growth, laser optics, RF devices
GaAs High-frequency electronics, photonics
Silicon Carbide (SiC) Power electronics, harsh environments
Thermal Oxide Wafers Electrical insulation, MEMS, device fabrication

Selecting the proper substrate improves film adhesion, minimizes thermal stress, and enhances device performance throughout fabrication.

Thin Film Materials Frequently Deposited

Researchers commonly deposit thin films of metals, oxides, nitrides, and semiconductors depending on device requirements.

  • Gold (Au)
  • Silver (Ag)
  • Aluminum (Al)
  • Copper (Cu)
  • Titanium (Ti)
  • Chromium (Cr)
  • Nickel (Ni)
  • Platinum (Pt)
  • Tungsten (W)
  • Tantalum (Ta)
  • Molybdenum (Mo)

These materials are widely used for electrical contacts, mirrors, diffusion barriers, electrodes, MEMS devices, optical coatings, sensors, and advanced semiconductor fabrication.

Typical Thin Film Deposition Applications

  • Semiconductor fabrication
  • Integrated circuits
  • MEMS devices
  • Solar cells
  • Photonic devices
  • Optical coatings
  • Medical sensors
  • Hard disk media
  • Microelectronics
  • Nanotechnology research

UniversityWafer supplies silicon, sapphire, quartz, glass, GaAs, SiC, and specialty substrates used by universities, government laboratories, and semiconductor manufacturers for PVD, CVD, ALD, sputtering, evaporation, and other thin film deposition processes.

Related Thin Film Deposition Resources