Highly stable three-band white light from an InGaN-based blue light-emitting diode chip precoated with (oxy)nitride green/red phosphors

Chih Chieh Yang, Chih Min Lin, Yi Jung Chen, Yi Tsuo Wu, Shih Ren Chuang, Ru Shi Liu, Shu Fen Hu

研究成果: 雜誌貢獻期刊論文同行評審

114 引文 斯高帕斯(Scopus)

摘要

A three-band white light-emitting diode (LED) was fabricated using an InGaN-based blue LED chip that emits 455 nm blue light, and green phosphor Sr Si2 O2 N2: Eu and red phosphor CaSi N2: Ce that emit 538 nm green and 642 nm red emissions, respectively, when excited by the 455 nm blue light. The luminous efficacy of this white LED is about 30 lmW at a dc of 20 mA. With increasing dc from 5.0 to 60 mA, both the coordinates x and y of the white LED tend to be the same, and consequently the Tc is the same and the Ra increases to 92.2.

原文英語
文章編號123503
期刊Applied Physics Letters
90
發行號12
DOIs
出版狀態已發佈 - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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