SEMICONDUCTOR DEVICES

Luminous efficacy and color rendering index of high power white LEDs packaged by using red phosphor

Lu Pengzhi, Yang Hua and Wang Guohong

+ Author Affiliations

PDF

Abstract: We packaged a series of high power white LEDs by covering the blue LED chips with yellow phosphor, red phosphor and the two phosphors mixed by appropriate mass ratio, respectively, and discussed the excitation and emission spectrum of yellow phosphor and red phosphor and the characteristics of the LEDs. We found that the luminous efficacy of the white LEDs covered with the two phosphors mixed by appropriate mass ratio was lower than that of the white LEDs covered with yellow phosphor, but the color rendering index was improved observably.

Key words: white LEDsyellow phosphorred phosphorcolor rendering indexluminous efficacyexcitation spectrum

  • Search

    Advanced Search >>

    GET CITATION

    shu

    Export: BibTex EndNote

    Article Metrics

    Article views: 3981 Times PDF downloads: 3027 Times Cited by: 0 Times

    History

    Received: 18 August 2015 Revised: Online: Published: 01 January 2011

    Catalog

      Email This Article

      User name:
      Email:*请输入正确邮箱
      Code:*验证码错误
      Lu Pengzhi, Yang Hua, Wang Guohong. Luminous efficacy and color rendering index of high power white LEDs packaged by using red phosphor[J]. Journal of Semiconductors, 2011, 32(1): 014011. doi: 10.1088/1674-4926/32/1/014011 Lu P Z, Yang H, Wang G H. Luminous efficacy and color rendering index of high power white LEDs packaged by using red phosphor[J]. J. Semicond., 2011, 32(1): 014011. doi: 10.1088/1674-4926/32/1/014011.Export: BibTex EndNote
      Citation:
      Lu Pengzhi, Yang Hua, Wang Guohong. Luminous efficacy and color rendering index of high power white LEDs packaged by using red phosphor[J]. Journal of Semiconductors, 2011, 32(1): 014011. doi: 10.1088/1674-4926/32/1/014011

      Lu P Z, Yang H, Wang G H. Luminous efficacy and color rendering index of high power white LEDs packaged by using red phosphor[J]. J. Semicond., 2011, 32(1): 014011. doi: 10.1088/1674-4926/32/1/014011.
      Export: BibTex EndNote

      Luminous efficacy and color rendering index of high power white LEDs packaged by using red phosphor

      doi: 10.1088/1674-4926/32/1/014011
      • Received Date: 2015-08-18

      Catalog

        /

        DownLoad:  Full-Size Img  PowerPoint
        Return
        Return