Quantum confinement effects in semiconducting scintillators

Kengo Shibuya, Naoko Inadama, Eiji Yoshida, Taiga Yamaya, Hideo Murayama, Masanori Koshimizu, Keisuke Asai

研究成果: Conference contribution

抜粋

A physical method to develop a scintillator with both a large light output and a quick response is proposed and demonstrated. A direct-gap semiconductor often exhibits ultrafast scintillation components with subnanosecond decay time constants at very low temperatures. However, the exciton luminescence is significantly quenched at room temperature to lose the practical merits. The authors found that the thermal quenching was effectively prevented by constructing a low-dimensional quantum confinement system and a practical amount of light output was obtained at room temperature without losing the quickness of the radiative recombination of the exciton. Crystals of (C6H 13NH3)2PbI4 having a multiple quantum well structure exhibited three decay components of 390 ps, 3.8 ns and 16 ns with the ratios of 28%, 29% and 43%, respectively. The total light output at 300 K was 11% of that of NaI:Tl.

元の言語English
ホスト出版物のタイトル2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference
ページ1503-1507
ページ数5
DOI
出版物ステータスPublished - 2005 12 1
イベントNuclear Science Symposium Conference Record, 2005 IEEE - , Puerto Rico
継続期間: 2005 10 232005 10 29

出版物シリーズ

名前IEEE Nuclear Science Symposium Conference Record
3
ISSN(印刷物)1095-7863

Other

OtherNuclear Science Symposium Conference Record, 2005 IEEE
Puerto Rico
期間05/10/2305/10/29

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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  • これを引用

    Shibuya, K., Inadama, N., Yoshida, E., Yamaya, T., Murayama, H., Koshimizu, M., & Asai, K. (2005). Quantum confinement effects in semiconducting scintillators. : 2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference (pp. 1503-1507). [1596604] (IEEE Nuclear Science Symposium Conference Record; 巻数 3). https://doi.org/10.1109/NSSMIC.2005.1596604