Improved efficiency of green GaN LEDs via exciton–surface plasmon coupling by Au nanoclusters embedded in a micro-hole patterned p-GaN layer
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Title
- Improved efficiency of green GaN LEDs via exciton–surface plasmon coupling by Au nanoclusters embedded in a micro-hole patterned p-GaN layer
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Author(s)
- Park, Ah Hyun; Baek, Seung Jae; Choi, Go Bong; Kim, Yoong Ahm; Lim, Jinsub; Seo, Tae Hoon
- KIOST Author(s)
- Baek, Seung Jae(백승재)
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Alternative Author(s)
- 백승재
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Publication Year
- 2021-11-01
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Abstract
- We report green light emitting diodes (LEDs) with Au nanoclusters in a micro-hole patterned p-GaN layer (ANCs-MHPP) to improve the light emission efficiency. Low-temperature photoluminescence (PL) and time-resolved PL showed that green LEDs with ANCs-MHPP demonstrated higher internal quantum efficiencies and faster decay times compared to conventional green LEDs. In addition, the opto-electronic performance of green LEDs with ANCs-MHPP was remarkable. These results can be attributed to the exciton–surface plasmon coupling between excitons in multi-quantum wells and surface plasmons of Au nanoclusters and the surface texturing effect caused by the geometrical shape of the micro-hole patterned p-GaN layer.
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ISSN
- 0003-6951
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/41682
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DOI
- 10.1063/5.0063071
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Bibliographic Citation
- Applied Physics Letters, v.119, no.18, 2021
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Publisher
- American Institute of Physics
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Type
- Article
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Language
- English
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Document Type
- Article
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