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- W4308206585 abstract "Nanorod array and planar green-emission InGaN/GaN multi-quantum well (MQW) LEDs were fabricated by lithography, nano-imprinting, and top–down etching technology. The defect-pinning effect of the nanostructure was found for the first time. The ratio of the bright regions to the global area in the panchromatic CL images of green MQW samples increased from 30% to about 90% after nano-fabrication. The overall luminous performance significantly improved. Throughout temperature-dependent photoluminescence (TDPL) and time-resolved PL (TRPL) measurements, the migration and recombination of carriers in the MQWs of green LEDs were analyzed. It was proved that nanostructures can effectively prevent carriers from being captured by surrounding nonradiative recombination centers. The overall PL integral intensity can be enhanced to above 18 times. A much lower carrier lifetime (decreasing from 91.4 to 40.2 ns) and a higher internal quantum efficiency (IQE) (increasing from 16.9% to 40.7%) were achieved. Some disputes on the defect influence were also discussed and clarified." @default.
- W4308206585 created "2022-11-09" @default.
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- W4308206585 date "2022-11-03" @default.
- W4308206585 modified "2023-10-15" @default.
- W4308206585 title "A Novel Way to Fill Green Gap of GaN-Based LEDs by Pinning Defects in Nanorod Array" @default.
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- W4308206585 doi "https://doi.org/10.3390/nano12213880" @default.
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