WAlN-SA003 AlGaN Epitaxial wafer
| Product Model | WAlN-SA003 |
| Product Category | AlGaN Epitaxial wafer |
| thickness | [2, 3) μm |
| (002) | ≤ 150 arcsec |
| (102) | ≤ 500 arcsec |
Product description
based on MOCVD High quality craftsmanship AlN/Sapphire template
Basic Parameters
| parameter name | parameter value |
|---|---|
| Diameter | 2 inch |
| Substrate | Sapphire |
| Substrate Thickness | 430±20 μm |
| Epilayer Thickness | [2, 3) μm |
| FWHM of 002 XRC | ≤ 150 arcsec |
| FWHM of 102 XRC | ≤ 500 arcsec |
| Front side roughness | ≤ 1. 5 nm (10×10 μm) |
| Edge exclusion | ≤ 3 mm |
| Through Crack | None |
| Surface orientation of a-plane | 0°±0. 1° |
| Surface orientation of m-plane | 0. 2°±0. 1° |
| Primary flat orientation | a-plane±0. 1° |
| Primary flat length | 16±1 mm |
| Back side roughness | 0. 8±0. 2 μm |
Frequently Asked Questions
What is the color visible to the naked eye UV-C LED Visible part of the emission spectrum, It comes from oxygen substitution sites in semiconductor materials, Electronic transitions between various deep energy levels such as lattice mismatch dislocations and conduction band energy levels. Because the defect energy level is located higher relative to the quantum well valence band, So the photons emitted by electronic transitions have longer wavelengths, usually 450nm left and right, For visible light. Restricted by the accuracy of semiconductor equipment, Chips from different regions and batches on the wafer, The concentration of material defects, There are slight differences in defect categories. This difference results in a difference in the position of deep energy levels that emit visible light, Further emit visible light of different wavelengths, Presenting different colors. Although the wavelength difference is very small, But it is noticeable to the naked eye.
UVC-LED Will not produce ozone, Because the covalent bond between oxygen and oxygen can reach up to 5. 1eV, The corresponding wavelength needs to be at least shorter than 243nm Only ultraviolet rays can interrupt it, Ultimately generate ozone.
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Core components
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