Delayed <1 1 1> texture for improving the thermal stability of Ag reflectors for high-performance GaN-based light-emitting diodes

Jun Suk Sung, Jaecheon Han, Do Young Noh, Tae Yeon Seong

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The thermal stability of Ag-based reflectors for GaN-based light-emitting diodes (LEDs) was significantly improved by inserting an Mg layer. LEDs fabricated with the Mg-inserted reflector exhibited 22% higher output power (at 20 mA) than LEDs with the Ag-only reflector. The Mg-inserted Ag sample was less <1 1 1> textured than the Ag-only sample. Based on scanning electron microscopy and X-ray results, the improved stability is attributed to the delay in the <1 1 1> texturing and the modification of the surface energy of Ag films.

Original languageEnglish
Pages (from-to)5-8
Number of pages4
JournalScripta Materialia
Volume80
DOIs
Publication statusPublished - 2014 Jun

Keywords

  • Annealing
  • Metallizations
  • Semiconductor compounds
  • Texture
  • X-ray diffraction (XRD)

ASJC Scopus subject areas

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

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