Substrate Thickness 650 ± 25 μm 4 Inch Blue LED GaN Epitaxial Wafer On Sapphire SSP Flat Sapphire
4 inch Blue LED GaN epitaxial wafer on sapphire SSP
For example, GaN is the substrate which makes violet (405 nm) laser diodes possible, without use of nonlinear optical frequency-doubling. Its sensitivity to ionizing radiation is low (like other group III nitrides), making it a suitable material for solar cell arrays for satellites. Military and space applications could also benefit as devices have shown stability in radiation environments.
| 4inch GaN-on-Sapphire Blue/Green LED Wafer |
| Substrate | Type | Flat Sapphire | 
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| Polish | Single side polished (SSP) / Double side polished (DSP) |
| Dimension | 100 ± 0.2 mm |
| Orientation | C plane (0001) off angle toward M-axis 0.2 ± 0.1° |
| Thickness | 650 ± 25 μm |
| Epilayer | Structure | 0.2μm pGaN/0.5μm MQWs/2.5μm nGaN/2.0μm uGaN |
| Thickness | 5.5 ± 0.5μm |
| Roughness (Ra) | <0.5 nm |
| Dislocation density | < 5 × 108 cm-2 |
| Wavelength | Blue LED | Green LED |
| 465 ± 10 nm | 525 ± 10 nm |
| Wavelength FWHMs | < 25 nm | < 40 nm |
| Chip Performance | Cut-in voltage@1μA | 2.3-2.5V | 2.2-2.4V |
| Useable Area | > 90% (edge and macro defects exclusion) |
| Package | Packaged in a cleanroom in a single wafer container |
About Us
We specialize in processing a variety of materials into wafers, substrates and customized optical glass parts.components widely used in electronics, optics, opto electronics and many other fields. We also have been working closely with many domestic and oversea universities, research institutions and companies, provide customized products and services for their R&D projects. It's our vision to maintaining a good relationship of cooperation with our all customers by our good reputations.
FAQ
Q: Are you trading company or manufacturer ?
We are factory.
Q: How long is your delivery time?
Generally it is 3-5 days if the goods are in stock.
or it is 7-10 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
Payment <=5000USD, 100% in advance.
Paymen >=5000USD, 80% T/T in advance , balance before shippment.
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625um To 675um 4 Inch Blue LED GaN Epitaxial Wafer On Sapphire SSP Flat Sapphire Images
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