"Yangzhou made" new materials to enhance LED light efficiency

Recently, at the International Symposium on Advanced Materials, a series of new materials products shined. The author takes you through the taste of these new materials.

"Long" LEDs emit more efficient light

Now many people have used led lights in their homes. How to make LEDs have longer service life, higher luminous efficiency and lower price through the improvement of technology, is a problem that many led companies are striving to study. In the exhibition area, Yangzhou Zhongke Semiconductor Lighting Co., Ltd. exhibited GaN-based LED epitaxial wafers and chips grown on sapphire substrates.

"GaN-based technology is the core technology of the LED industry , which is the epitaxial material growth technology and chip processing technology." Dr. Li Zhicong, director of the technology research and development department of Yangzhou Zhongke Semiconductor Lighting Co., Ltd. introduced, simply, is the "long" GaN material on the sapphire. And luminous structure. "How to 'long' high-quality GaN materials is our core technology." Li Zhicong said that on the basis of this, they also designed a high luminous efficiency LED structure, and using advanced chip processing technology, will be a two-inch The LED epitaxial wafer is cut into thousands or tens of long led chips with a length and width of only a few tenths of a millimeter.

According to reports, this product has been widely used in indoor lighting sources, LCD TV backlights, signal indicators and many other fields, more than 50% energy saving compared to traditional light sources.

Yizheng Chemical Fiber Special Fiber

Zhongke Semiconductor LED Lighting

Solar cell epitaxial film on the satellite "Yangzhou made"

The ultra-high brightness red and yellow epitaxial wafers produced by Yangzhou Ganzhao Optoelectronics Co., Ltd. are among the best in the country in terms of cost performance, production scale and product consistency.

"Red and yellow LEDs are mainly used in signal indication, display , landscape decoration, electronic appliances, backlights, etc. In the future, home lighting will be our direction of expansion." Zhang Yinqiao, deputy general manager of Yangzhou Dry Photoelectric Co., Ltd. said According to another pillar business, the triple junction GaAs solar cell epitaxial wafer has been successfully matched for domestic satellites, accounting for more than 50% of the national aerospace market share.

Small finger-sized fibers can pull the truck

Ultra-high molecular weight polyethylene fiber and carbon fiber and aramid fiber are called three high-performance fibers. They are the third-generation special fiber and the strength is more than ten times that of the same-section steel wire. Ultra high molecular weight polyethylene fibers are available in both dry and wet process routes.

“The high-strength fiber produced by the dry spinning process has low solvent content, high strength and good creep resistance, and is mostly used in high-end products. Compared with the wet process, the dry spinning process has a short process and an environmentally friendly production process. The comprehensive performance index of the product is high, but the technology has been monopolized by foreign countries for a long time,” said Yan Yang, deputy director of the technology development room of the high-fiber production center of Yizheng Chemical Fiber Co., Ltd. of Sinopec.

In 2008, Yizheng Chemical Fiber broke this monopoly and filled the domestic gap. Yu Yang explained that because of its light density and high strength, this material is widely used in bulletproof materials, cut-proof stab-resistant products, cables and other fields. The small fingers of the small fingers can pull the truck.