Development and performance test of deep ultraviolet–visible photoacoustic spectroscopy system for nonradiative deactivation characterization in phosphor materials

Yutaka Fujimoto, Daisuke Nakauchi, Takayuki Yanagida, Masanori Koshimizu, Haruki Fukada, Yamato Hayashi, Keisuke Asai

Research output: Contribution to journalArticle

Abstract

We developed a deep-ultraviolet–visible photoacoustic (PA) spectroscopy system for the evaluation of nonradiative deactivation in phosphor materials. The system consists of a xenon arc lamp of 300 W with an aspherical condensing mirror, a monochromator, a mechanical chopper to modulate the monochromatic light at a certain frequency of 10–100 Hz, and a single optical fiber. The acoustic signal from the sample was counted with an electret microphone connected to a preamplifier, a sound level meter unit, and a lock-in amplifier. 0.25, 0.5, and 1.0 mol% Ce-doped Y3Al5O12 crystalline samples were evaluated for the performance test of the system. From the evaluation, an inverse correlation among fluorescence quantum efficiency, scintillation light yield, and PA signal was experimentally confirmed.

Original languageEnglish
Pages (from-to)1453-1459
Number of pages7
JournalSensors and Materials
Volume32
Issue number4
DOIs
Publication statusPublished - 2020 Apr 20

Keywords

  • Ce:YAlO
  • Nonradiative deactivation
  • Photoacoustic spectroscopy
  • Scintillator

ASJC Scopus subject areas

  • Instrumentation
  • Materials Science(all)

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