High-efficiency, microscale GaN light-emitting diodes and their thermal properties on unusual substrates

  • Tae Il Kim
  • , Yei Hwan Jung
  • , Jizhou Song
  • , Daegon Kim
  • , Yuhang Li
  • , Hoon Sik Kim
  • , Il Sun Song
  • , Jonathan J. Wierer
  • , Hsuan An Pao
  • , Yonggang Huang
  • , John A. Rogers

Research output: Contribution to journalArticlepeer-review

211 Scopus citations

Abstract

A method for forming efficient, ultrathin GaN light-emitting diodes (LEDs) and for their assembly onto foreign substances is reported. The LEDs have lateral dimensions ranging from â̂1 mm × 1 mm to â̂25 μm × 25 μm. Quantitative experimental and theoretical studies show the benefits of small device geometry on thermal management, for both continuous and pulsed-mode operation, the latter of which suggests the potential use of these technologies in bio-integrated contexts.

Original languageEnglish
Pages (from-to)1643-1649
Number of pages7
JournalSmall
Volume8
Issue number11
DOIs
StatePublished - 11 Jun 2012
Externally publishedYes

Keywords

  • flexible electronics
  • gallium nitride
  • laser lift-off (LLO)
  • light-emitting diodes
  • transfer printing

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