Born of the domestic equipment how to stand out in a competitive market? According to the latest market research data, with the rapid development of LED lighting applications, is expected to 2013 domestic demand for MOCVD equipment at about 300 units, and the next three to five years, the demand will surge to 3000 units. Fate is not correct, therefore, the market space is not a problem, the key is the domestic equipment production enterprises should plan, step-by-step, the foot to expand production.
Domestic LED epitaxy chip enterprises, on the other hand, also from 3-5, 2000 in 2009 to more than 30 and 2012 of the 70-80. After years of technology accumulation, silicon-based high-power LED chips in China managed to mass production, not only have made a big leap forward in the new patches of the size, but also from the early small size chips luminous efficiency of up to more than 90 lm/W 120 lm/W, with vertical structure, good heat dissipation, resistance to high current density, simple structure and other comprehensive advantages, and has been successfully used to street lamp, ball bubble lights, flashlights, miner’s lamp, head lamp, indoor and outdoor high-end lighting products. So far, domestic silicon high-power LED chips, luminous efficiency has reached 130 lm/W, to keep pace with the world first-class chip.
As is known to all, the silicon substrate material and the GaN material large lattice constant and the thermal expansion coefficient difference directly affects the quality of chip is the main reason. Domestic enterprises through the graphical substrate, using AIN and AlGaN multilayer warm rush layer pressure should be in, introduced a variety of ways, such as, reducing silicon substrate with GaN Zhang Yingli, thereby eliminating the epitaxial layer crack. Relatively innovative technology has been applied in many countries and regions. Independent intellectual property rights and complete silicon-based LED chip, for domestic companies to get the sapphire substrate, silicon carbide substrate outside the third path of semiconductor lighting technology to lay a solid foundation. Silicon-based large-scale application of LED technology will highlight large-scale manufacturing production efficiency advantage and cost advantage. Especially a new generation of silicon-based high-power LED chips, will further enhance performance LED lighting products, LED lighting products to reduce costs, to speed up the LED lighting products into the homes of milestone significance.