Technical Physics Letters

, Volume 41, Issue 11, pp 1041–1043 | Cite as

Optical and thermal properties of phosphors based on lead-silicate glass for high-power white LEDs

  • M. A. Shvaleva
  • Yu. V. Tuzova
  • A. E. Romanov
  • V. A. Aseev
  • N. V. Nikonorov
  • K. D. Mynbaev
  • V. E. Bugrov
Article

Abstract

A study is reported of the properties of a new phosphor material based on a highly refractive leadsilicate glass and microparticles of yttrium-aluminum garnet doped with cerium ions (YAG: Ce3+). The mass percentage fraction of YAG: Ce3+ microparticles in the material was varied from 50 to 90%. The optical properties of the phosphor were examined, as well as its thermal properties when used as a primary optical material in high-power light-emitting diode (LED) units. The results obtained reveal problems of excess heat removal from an LED structure, which appear on passing from phosphor binders based on silicone elastomers to glasses, and demonstrate that the phosphor developed in the study is promising for obtaining warm white light.

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Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • M. A. Shvaleva
    • 1
    • 2
  • Yu. V. Tuzova
    • 1
    • 2
  • A. E. Romanov
    • 1
    • 2
  • V. A. Aseev
    • 1
    • 2
  • N. V. Nikonorov
    • 1
    • 2
  • K. D. Mynbaev
    • 1
    • 2
  • V. E. Bugrov
    • 1
    • 2
  1. 1.University of Information Technologies, Mechanics, and OpticsSt. PetersburgRussia
  2. 2.Ioffe Physical Technical InstituteRussian Academy of SciencesSt. PetersburgRussia

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