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

研究成果: Article

抜粋

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.

元の言語English
ページ(範囲)1453-1459
ページ数7
ジャーナルSensors and Materials
32
発行部数4
DOI
出版物ステータスPublished - 2020 4 20

ASJC Scopus subject areas

  • Instrumentation
  • Materials Science(all)

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