White-light emission from near UV InGaN-GaN LED chip precoated with blue/green/red phosphors

Jinn-Kong Sheu, Shoou-Jinn Chang, C. H. Kuo, Y. K. Su, L. W. Wu, Yu-Cheng Lin, Wei-Chi Lai, J. M. Tsai, G. C. Chi, R. K. Wu

研究成果: Article同行評審

626 引文 斯高帕斯(Scopus)

摘要

Phosphor-converted light-emitting diodes (LEDs) were fabricated by precoating blue/green/red phosphors onto near ultraviolate (n-UV) LED chips prior to package into LED lamps. With a 20-mA injection current, it was found that the color temperature Tc was around 5900 K and the color-rendering index Ra was around 75 for the "n-UV+blue/green/red" white LED lamps. It was also found that no changes in color temperature Tc color-rendering index Ra could be observed when we increased the injection from 20 to 60 mA. These results indicate that such "n-UV+blue/green/red" white LEDs are much more optically stable than the conventional "blue+yellow" LEDs.

原文English
頁(從 - 到)18-20
頁數3
期刊IEEE Photonics Technology Letters
15
發行號1
DOIs
出版狀態Published - 2003 一月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 原子與分子物理與光學
  • 電氣與電子工程

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