Improving optical properties of white LED fabricated by a blue LED chip with yellow/red phosphors

C. C. Lin, Y. S. Zheng, H. Y. Chen, C. H. Ruan, G. W. Xiao, R. S. Liu

研究成果: 雜誌貢獻文章同行評審

90 引文 斯高帕斯(Scopus)

摘要

White light-emitting diodes (LEDs) were fabricated by associating an InGaN-based blue LED chip with highly luminescent phosphors, Y3A l5O12:Ce3+ (YAG:Ce) and CaSiAlN3: Eu2+. The thermal stability of these phosphors, depending weakly on the composition and the activator concentration, remains high over a wide range of temperatures (25-300°C). When a mixture of YAG:Ce and CaSiAlN 3: Eu2+ was coated on a blue LED, the resultant white LED had a high luminous efficiency of νL = 68 lm/W, a high color rendering index of Ra = 93, and a color temperature of TC = 3007 K (at 50 mA). Additionally, the color coordinates, Ra and TC, of the white LED tend to remain constant against an appreciable variation in applied current.
原文英語
頁(從 - 到)H900-H903
期刊Journal of the Electrochemical Society
157
發行號9
DOIs
出版狀態已發佈 - 8月 26 2010
對外發佈

ASJC Scopus subject areas

  • 電子、光磁材料
  • 可再生能源、永續發展與環境
  • 凝聚態物理學
  • 表面、塗料和薄膜
  • 電化學
  • 材料化學

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