Application of red light-emitting diodes using Mg3.5Ge 1.25O6:Mn4+ phosphor

Seung Jae Lee, Jongjin Jung, Ja Young Park, Hye Mi Jang, Yong Rok Kim, Joung Kyu Park

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Mg3.5Ge1.25O6:Mn4+ was synthesized by a solid-state reaction and its photoluminescence characteristics were investigated. The synthesized phosphor showed a narrow emission band between 600 and 700 nm with two clear peaks at 632 and 660 nm and two obscure peaks at 626 and 653 nm due to the 2E→4A2 transition of Mn4+ex=405 nm). Red light-emitting diodes (LEDs) were fabricated through the integration of an InGaN UV chip (λem=405 nm) and Mg3.5Ge1.25O 6:Mn4+ phosphor in a single package. Red LEDs showed CIE chromaticity with values of x=0.32 and y=0.10 and the color temperature of 4900 K.

Original languageEnglish
Pages (from-to)108-111
Number of pages4
JournalMaterials Letters
Volume111
DOIs
Publication statusPublished - 2013 Sep 16

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Application of red light-emitting diodes using Mg<sub>3.5</sub>Ge <sub>1.25</sub>O<sub>6</sub>:Mn<sup>4+</sup> phosphor'. Together they form a unique fingerprint.

  • Cite this