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Set a new industry record! China Star Power Co., Ltd. and South China University of Technology have successfully developed the highest luminous efficiency of quantum dot LED devices in the industry
Release time:
2021-04-10 15:23
Source:
Recently, The latest research results of "Toward 200 Lumens per Watt of Quantum-Dot White-Light-Emitting Diodes by", jointly established by Guangdong Key Laboratory of Semiconductor Micro-Display Enterprises and South China University of Technology "Reducing Reabsorption Loss" was published in the internationally renowned journal ACS Nano. This achievement is another major breakthrough since the official launch of Guangdong Semiconductor Micro Display Enterprise Key Laboratory, which has broken the industry record of the highest luminous efficiency of similar devices. It is expected to speed up the commercialization process of this new technology, and consolidate the technical superiority position of China Star Power in the MINI /Micro LED display field.
▲ Paper cover, principles, and efficiency comparison
Quantum dot color conversion technology is a common key technology for MINI/Micro LED,OLED and LCD wide color gamut display,and has great application potential in emerging fields such as ultra-clear display and virtual display.At present,the photoluminescence efficiency of quantum dots such as cadmium selenide and perovskite has exceeded 85%,which is higher than traditional rare earth phosphor materials.However,the photoluminescence efficiency of encapsulated LED devices is generally in the range of 50-130 lm/W(theoretical efficiency>200 lm/W).The above conflicts have troubled academic circles and industry for many years.The low luminous efficiency seriously restricts the practical application of quantum dot LED display technology.
In addition,the results make straight rectangular tube hole compound quantum dots convert structure and strengthen the mechanism of light color,use wet mechanical agitation to quantum dots and efficient assembly on the particle size of matching straight rectangular tube pore structure,hole structure is filled with low refractive index of silicone,formed by the refractive index difference inhibits fluorescent photons inside the hole is the spread of silicone resin base material,a significant reduction in weight to absorb losses.Finally,it successfully broke through the luminous efficiency bottleneck of quantum dot LED devices and obtained the industry record of the highest luminous efficiency of similar devices over 200 lm/W(tested by a third-party agency certified by CNAS).
▲ In 2020, Guangdong Provincial Key Laboratory of Semiconductor Micro Display Enterprises and China Starlight Electric Research Institute were officially inaugurated
Guangdong Semiconductor Micro Display Enterprise Key Laboratory,jointly established by China Xingguang Electric Co.,Ltd.,South China University of Technology and other institutions of higher education,aims to solve the industrial generic technical problems in the ultra-high definition semiconductor micro display field,and realize the industrialization and demonstration application of related technologies.This major breakthrough in key technologies is the result of in-depth cooperation between industry,education and research to achieve win-win development.It provides strong technical support for the company's overall layout in the field of ultra-high-definition semiconductor micro-display and adds impetus to the industrialization process of ultra-high-definition display.For a long time,the company has given full play to the advantages of combining"production,education and research"and introduced and trained high-quality and innovative talents by relying on the post-doctoral research workstation and the Guangdong-Hong Kong-Macao Joint Laboratory of Intelligent Micro/Nano Photoelectric Technology and other university-enterprise joint research platforms.In recent years,postdoctoral projects have covered the frontier fields of full-spectrum white LED,LED packaging for backlight with wide color gamut,and third-generation semiconductor technology.
In the future,the company will continue to strengthen the integration of industry,education and research,strengthen the key core technologies,speed up the transformation of scientific and technological innovation,strive to refresh the global semiconductor micro-display technology field to a new height,and contribute to the rise of the world's top 500.
▎Thesis Information:
Jia-Sheng Li,Yong Tang,Zong-Tao Li*,Jie-Xin Li,Hao-Chung Kuo et al.,Toward 200 Lumens per Watt of Quantum-Dot White-Light-Emitting Diodes by Reducing Reabsorption Loss,ACS Nano 15(1):550-562,2021.
industry,semiconductor,display
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