Determination of current-crowding effects on loss of light-output power in InGaN/GaN blue-light-emitting diodes

Autor:	Jung-Hoon Song, Yanqun Dong, Hye-Jung Yu, Jin-Gyu Lee, Tae-Soo Kim, Nan-Cho Oh
Rok vydání:	2015
Předmět:	Materials science Optics business.industry Current crowding General Physics and Astronomy Optoelectronics Current (fluid) business Current density Loss rate Blue light Power (physics) Diode
Zdroj:	Journal of the Korean Physical Society. 67:346-349
ISSN:	1976-8524 0374-4884
DOI:	10.3938/jkps.67.346
Popis:	We analyzed the current-crowding process and its effects on carrier spill-over and light outputpower loss in InGaN/GaN blue-light-emitting diodes. When the current density was measured to be 3.1 times larger, the carrier spill-over was observed to be 1.9 times higher. The effects of current crowding on the loss of efficiency and on carrier spill-over were determined quantitatively. Through this analysis, we were able to correlate the degree of current crowding with the loss rate of lightoutput power. When the injected current was increased 2.5 times, the current-spreading length decreased 1.2 times, and the loss rate of the light-output power increased from 5% to 12%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2d0ca8877b6d2ae5657598fbbb5582ba https://doi.org/10.3938/jkps.67.346 Zobrazit plný text záznamu Full text from SpringerLink