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Time-resolved ultraviolet near-field scanning optical microscope for characterizing photoluminescence lifetime of light-emitting devices

  • Kyoung Duck Park
  • , Hyun Jeong
  • , Yong Hwan Kim
  • , Sang Youp Yim
  • , Hong Seok Lee
  • , Eun Kyung Suh
  • , Mun Seok Jeong*
  • *Corresponding author for this work
  • Gwangju Institute of Science and Technology
  • Jeonbuk National University
  • Sungkyunkwan University
  • Jeju National University

Research output: Contribution to journalJournal articlepeer-review

Abstract

We developed a instrument consisting of an ultraviolet (UV) near-field scanning optical microscope (NSOM) combined with time-correlated single photon counting, which allows efficient observation of temporal dynamics of near-field photoluminescence (PL) down to the sub-wavelength scale. The developed time-resolved UV NSOM system showed a spatial resolution of 110 nm and a temporal resolution of 130 ps in the optical signal. The proposed microscope system was successfully demonstrated by characterizing the near-field PL lifetime of InGaN/GaN multiple quantum wells.

Original languageEnglish
Pages (from-to)1798-1801
Number of pages4
JournalJournal of nanoscience and nanotechnology
Volume13
Issue number3
DOIs
StatePublished - 2013.03

Keywords

  • Near-field scanning optical microscopy (NSOM)
  • Time-correlated single photon counting (TCSPC)
  • Time-resolved photoluminescence (TRPL)

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science
  • Engineering - Chemical
  • Chemistry
  • Physics & Astronomy
  • Biological Sciences

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