Product Description
Sapphire shells for lamps, absorption cells, and filters of atomic (rubidium) frequency standards raise the characteristics of the devices: they diminish the rela-tive frequency change corresponding with the time of work and atmospheric pres-sure, decrease power consumption, and increase the mean time between failure of devices.
Due to their high thermal conductivity, sapphire shells allow withdrawal of heat from laser elements made of materials with low thermal conductivity. Transparent sapphire shells are able to protect Mo-heaters from oxidation or aggressive media.
Although there are lots substrates which are regarded as potential materials to replace sapphire substrate, it is still dominated in the substrates (for GaN LED growth) market, because of its reasonable price and relatively low mismatch.
Zhongju is capable of processing substrates according to customer needs. Currently, our sapphire substrate productions ranges from 2 to 12 inches with high quality and accurate orientation.
Table 1 Size of substrates
|
|
2 inches Substrates |
4 inches Substrates |
6 inches Substrates |
|
Diameter (mm) |
50.9±0.1 |
100.1±0.1 |
150.1±0.1 |
|
Primary Flat Length (mm) |
16±1 |
31±1 |
47.5±1 |
Table 2 Specification of substrates
|
Material |
High purity single crystal sapphire |
|
Surface Orientation |
C-plane ± 0.1° |
|
Primary Flat Orientation |
A-plane ± 0.5° |
|
Broken edge length |
≤3mm |
|
Crack |
0 |
|
Defect |
No inclusion，twin，or boundary |
|
Bubble and cloud |
Dense bubbles, clouds, and scattered bubble marked and counted as defects by length |
|
EPD |
≤1000 pits/cm2 |
CONTACT US
ShanXiZhongJuJingKe Semiconductor Co., Ltd
Contact Person: yang
Phone：86-0354-3051057
Fax：
Address: No.2, machinery park, huitong industrial park, jinzhong development zone, shanxi demonstration zone,Jinzhong,Shanxi
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