Yuanrong Optoelectronics: High-power purple chip competes for the 2015 Golden Globe Award
[Text / high-tech LED Yue Mengdi] High-tech Research Institute LED Research Institute (GGII) survey data show that the output value of LED epitaxial chips will reach 14.8 billion yuan in 2015, the growth slows down, but the data also shows that from 2012 to 2015 In the first half of the year, the average upstream gross profit margin increased slightly, and the average price decline of the products slowed down, indicating that the industry entered a healthy competition.
The pattern of LED chips has been basically fixed, and various chip manufacturers have basically found a way to survive. Among them, the new three-board new listing company Yuanrong Optoelectronics (832502), also stood firm in the market with its stable and stable characteristics.
Founded in late 2010, Yuanrong Optoelectronics has experienced more than four years of development and become an indispensable supplier of important LED upstream products. The annual output value is 400 million yuan and the products are sold at home and abroad. In 2014, the company began to develop high-power violet chips and achieved initial results. After market tempering and continuous feedback from customers, the company made good progress.
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According to Xu Qi, the project manager of Yuanrong Optoelectronics, the company's high-power violet chip is based on the sapphire PSS substrate to grow the epitaxial layer, using a new PSS substrate to solve the problem of poor crystal quality caused by the two-step growth. At the same time, using the low-speed three-dimensional growth mode to improve the crystal quality of the epitaxial layer can reduce the defect density and improve the internal quantum efficiency.
"On the other hand, the chip uses a zigzag quantum well design, which improves the quantum trap on the carrier and increases the probability of electron hole recombination," Xu Qi said further. The chip performs N-type and P-type layers. The optimization of doping minimizes the absorption of violet light by the N-type layer and the P-type layer, and can improve the light-emitting efficiency of the violet light. In order to obtain a high-quality deep-UV LED chip, the circular-fused photoelectric method also attempts to adopt a non-polar surface or semi-polar surface epitaxial growth technique on the GaN homogeneous substrate, partially eliminating the quantum Stark effect caused by the polarization electric field.
From the market reaction point of view, Yuanrong Optoelectronics customers are satisfied with their high-power products, thinking that they can fully understand the needs of customers, and from the perspective of the company, provide a lot of technical consulting services.
"I hope that our products can not only experience the test of the market, but also won the praise of experts and colleagues, and won this year's high-tech LED Golden Globe Award." Chen Rongdong said.
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