Luminous characteristics of high-voltage blue mini-light-emitting diodes
Source abstract
Abstract
The luminous characteristics of flip-chip type high-voltage (HV) blue mini-light-emitting diodes (LEDs), which consist of three serially connected sub-mesas, have been investigated for the first time. The cryogenic electroluminescence below 100 K partially originates from localized excitons. As the driving current reaches 1 μA, the contributions of Shockley–Read–Hall nonradiative recombination and radiative recombination exhibit a remarkably inverse temperature dependence, while the contributions of Auger recombination and carrier leakage are relatively negligible. The mesa corresponding to the anode of the HV blue mini-LED exhibits the lowest temperature among the three sub-mesas due to its smaller thermal resistance. To minimize the temperature-induced shift in chromaticity coordinates, it is necessary to adjust the driving current based on the operating temperature.
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Research context
OpenAlex topics: Organic Light-Emitting Diodes Research · GaN-based semiconductor devices and materials · Thin-Film Transistor Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
National Innovation Platform for the Fusion of Industry and Education in Integrated Circuits, Department of Electronic Science, School of Electronic Science and Engineering, Xiamen University 1 , Xiamen 361005, China
Xiamen Changelight Company Ltd. 2 , Xiamen 361101, China
Shenzhen Research Institute of Xiamen University 3 , Shenzhen 518057, China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Fujian Province · Natural Science Foundation of Shenzhen Municipality · Fujian Provincial Department of Industry and Information Technology
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Show source-provided references
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