Application of quantum dots in solid state lighting

S. R. Chung, Y. H. Yu, K. W. Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In this study, binary CdSe and ternary Zn0.5Cd0.5Se quantum dots (QDs) with monochromatic light are blended with conventional phosphors and those monochromatic lights of Zn0.5Cd0.5Se QDs are also mixed together and then packaged as remote type. Besides, white light CdSe QD are used alone to fabricate white light-emitting diode (LED). We have demonstrated that the color rendering index (CRI) and luminous efficacy can be improved by blending conventional phosphors with QDs. The Zn0.5Cd0.5Se QDs incorporated with yellow phosphors have better device performance and optical properties. Zn0.5Cd0.5Se QDs with different emission wavelength are blended with each other. The result reveals that mixing ratios and photoluminescence efficiency (PLE) between different colors of QDs are important factors. When white CdSe QD is excited by ultraviolet LED (UV-LED) without mixing multi-colors of phosphor, high CRI can be obtained for CdSe-based white LED.

Original languageEnglish
Title of host publicationPhotonic Fiber and Crystal Devices
Subtitle of host publicationAdvances in Materials and Innovations in Device Applications VIII
EditorsShizhuo Yin, Ruyan Guo
PublisherSPIE
ISBN (Electronic)9781628412277
DOIs
StatePublished - 2014
EventPhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII - San Diego, United States
Duration: 17 Aug 201418 Aug 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9200
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII
Country/TerritoryUnited States
CitySan Diego
Period17/08/1418/08/14

Keywords

  • Color rendering index
  • Luminous efficacy
  • Quantum dot
  • White light CdSe
  • White light-emitting diode

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