Influence of Interference on Extraction Efficiency of Ultraviolet Vertical Light-Emitting Diodes
| Autor: | Gye Mo Yang, Sang Hern Lee, Seung-Hwan Kim, Young Ho Song, Hyung Jo Park, Jun Seok Ha, Jong Hyeob Baek, Seong Ran Jeon |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Solid-state physics business.industry Radiation Condensed Matter Physics Interference (wave propagation) medicine.disease_cause Electronic Optical and Magnetic Materials law.invention Optics law Optical cavity Materials Chemistry medicine Optoelectronics Electrical and Electronic Engineering business Layer (electronics) Ultraviolet Light-emitting diode Diode |
| Zdroj: | Journal of Electronic Materials. 42:2435-2438 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-013-2611-2 |
| Popis: | We report on enhanced efficiency of ultraviolet vertical light-emitting diodes (VLEDs) with interference between the reflective mirror and the multiple quantum well. The dimensions of the cavity are fixed at 30 nm for the p-AlGaN layer, while various thicknesses of p-GaN from 60 nm to 140 nm were used. The light output power of the VLED in constructive compared with destructive interference condition increased by 23.9% at 350 mA. These improvements could be attributed to the predominant constructive interference of vertical radiation due to an optical cavity with optimal p-GaN thickness. |
| Databáze: | OpenAIRE |
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