Quantum confinement effects in semiconducting scintillators

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

doi:10.1109/NSSMIC.2005.1596604

Quantum confinement effects in semiconducting scintillators

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

ENG - Applied Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

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.

Original language	English
Title of host publication	2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference
Pages	1503-1507
Number of pages	5
DOIs	https://doi.org/10.1109/NSSMIC.2005.1596604
Publication status	Published - 2005
Event	Nuclear Science Symposium Conference Record, 2005 IEEE - , Puerto Rico Duration: 2005 Oct 23 → 2005 Oct 29

Publication series

Name	IEEE Nuclear Science Symposium Conference Record
Volume	3
ISSN (Print)	1095-7863

Conference

Conference	Nuclear Science Symposium Conference Record, 2005 IEEE
Country/Territory	Puerto Rico
Period	05/10/23 → 05/10/29

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10.1109/NSSMIC.2005.1596604

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

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title = "Quantum confinement effects in semiconducting scintillators",

abstract = "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.",

author = "Kengo Shibuya and Naoko Inadama and Eiji Yoshida and Taiga Yamaya and Hideo Murayama and Masanori Koshimizu and Keisuke Asai",

year = "2005",

doi = "10.1109/NSSMIC.2005.1596604",

language = "English",

isbn = "0780392213",

series = "IEEE Nuclear Science Symposium Conference Record",

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Shibuya, K, Inadama, N, Yoshida, E, Yamaya, T, Murayama, H, Koshimizu, M & Asai, K 2005, Quantum confinement effects in semiconducting scintillators. in 2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference., 1596604, IEEE Nuclear Science Symposium Conference Record, vol. 3, pp. 1503-1507, Nuclear Science Symposium Conference Record, 2005 IEEE, Puerto Rico, 05/10/23. https://doi.org/10.1109/NSSMIC.2005.1596604

Quantum confinement effects in semiconducting scintillators. / Shibuya, Kengo; Inadama, Naoko; Yoshida, Eiji et al.
2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference. 2005. p. 1503-1507 1596604 (IEEE Nuclear Science Symposium Conference Record; Vol. 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Shibuya, Kengo

AU - Inadama, Naoko

AU - Yoshida, Eiji

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AU - Murayama, Hideo

AU - Koshimizu, Masanori

AU - Asai, Keisuke

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N2 - 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.

AB - 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.

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ER -

Quantum confinement effects in semiconducting scintillators

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