The substrate for blue LED and blue-violet semiconductor laser is expected to use strontium aluminum silicate (ScAlMgO4, commonly known as: SCAM). The characteristic of SCAM is that the lattice mismatch with GaN is only 1.8%, which is convenient for suppressing crystal defects such as dislocations. It is easier to increase the current density of the blue LED compared to using a sapphire substrate. Illustration: SCAM crystallizes into GaN LED The former SCAM crystal is not a single crystal, but polycrystalline, and the size is only the size of the small thumb. Now Futian Crystal Technology Institute has successfully developed a high-quality SCAM single crystal with a diameter of 2 inches. The "rotary pull method (CZ method)" is adopted. The use of SCAM crystals as a substrate for growing GaN-based semiconductors has appeared. Futian Institute of Crystal Technology has produced a 2 inch SCAM crystal. Currently mainly for LEDs, it is also intended for power components in the future. SCAM can produce wafers from silicon ingots by a cracking process, so it is expected to achieve cost reduction. The Institute cracked the prototype SCAM crystal and evaluated its C-plane by X-ray diffraction. It was found to have a half-width of 12.9 seconds and the crystal quality was comparable to that of Si. Futian Crystal Technology Research Institute is scheduled to sell 2 inch SCAM substrates in the spring of 2015. A 4 to 6 inch substrate will also be developed. In addition, the Institute intends to form a thick GaN crystal with low dislocations on the SCAM crystal, and this GaN crystal is used as a "GaN independent substrate" for forming electronic components. It is envisaged mainly for the manufacture of GaN power components. Home energy storage system,reliable house generators,hybrid solar system,home backup power,whole home solar system,small solar system for home,house backup battery EMoreShare International Trade (Suzhou) Co., Ltd , https://www.emoresharesystem.com