ZnO Substrate

Zinc oxide (ZnO) is a good substrate for GaN thin film. It has a large exciton binding energy of 60 MeV and a bandwidth of 3.73 eV at room temperature, making it a luminescent material for ultraviolet and visible light. Due to the transparency in the visible region, the large electromechanical coupling coefficient and the properties of adsorption and desorption of gas molecules on its surface, it is expected to be used in energy limiters with high peak energy, GaN substrates with large size and high quality, and wireless communications which beyond 5GHz in the future, high electric field equipment, high temperature and high energy electronic devices, etc..

OST Photonics offers high quality ZnO substrates for researchers and industries. Crystal orientation, size and thickness can be customized according to your requirements.

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Features

  • Large exciton binding energy of 60 MeV

  • Large bandwidth of 3.73 eV

  • High transparency in the visible region

  • Large electromechanical coupling coefficient

Applications

  • Substrate for GaN thin film

  • Wireless communications

  • High temperature and high energy electronic devices

  • High electric field equipment

Processing Capability

  • Orientation: <0001>, <11-20>, <10-10>, etc.

  • Dimension: 5x5mm, 10x10mm, 15x15mm, 20x20mm, 25x25mm, etc.

  • Thickness: 0.5mm, 1.0mm, etc.

  • Available items: substrates, blanks and customized optics

Specification and Properties of ZnO Substrates

Crystal System

Hexagonal

Growth Method

Hydrothermal

Crystal Lattice Constant

a=3.252 Å  c=5.313 Å

Melting Point

1975 ℃

Density

5.7 g/cm3

Hardness

4 Mohs

Thermal Expansion Coefficient

//a: 6.5×10^-6 /℃ //c: 3.7×10^-6 /℃

Specific Heat

0.125 cal/g.m

Thermoelectric Constant

1200 mv/k @ 300 ℃

Heat Conductivity

0.006 cal/cm/k

Transmission Range

>50%@0.4-0.6 um (2mm)

Orientation

<0001>,<11-20>,<10-10>, etc.

Orientation Tolerance

±0.5° or better

Dimension

5x5mm, 10x10mm, 15x15mm, 20x20mm, 25x25mm, etc.

Dimension Tolerance

±0.1 mm or better

Thickness

0.5mm, 1.0mm, etc.

Thickness Tolerance

±0.05 mm or better

Surface Finish

Single side polished (SSP)/Double sides polished (DSP)

Surface Roughness

Ra<5Å (5µmx5µm)

Package

Class 100 clean bag, Class 1000 super clean room