We fabricated organic–inorganic perovskite nanocrystals in nanoporous glasses (OIPiG) where (C6H5C2H4NH3)2PbBr4 (Phe) was incorporated into about 4 nm diameter pores and evaluated their photoluminescence and scintillation properties, compared with the Phe single crystal. Both the samples showed emissions due to the recombination of free excitons in the inorganic layer under 280 nm excitation light. In scintillation, a weak and broad scintillation peak possibly due to the free excitons and bound excitons was observed in the OIPiG, while the Phe single crystal showed efficient scintillation due to free exciton emissions with a peak approximately at 435 nm. The scintillation decay time constant (4.4 ns) due to the free excitons for the OIPiG was found to be faster than that (6.6 ns) for the Phe single crystal. In addition, the afterglow levels were confirmed to be 340 ppm for the OIPiG and 20 ppm for the Phe single crystal. The afterglow level of the OIPiG was higher than that of the Phe single crystal but was almost equivalent to that for the commonly used inorganic scintillator CsI:Tl.
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7 June 2020
Research Article|
June 01 2020
Scintillation properties of organic–inorganic layered perovskite nanocrystals in glass
Special Collection:
Hybrid Organic-Inorganic Halide Perovskites
Naoki Kawano
;
Naoki Kawano
a)
1
Graduate School of Engineering Science, Akita University
, 1-1 Tegata-Gakuenmachi, Akita-shi, Akita 010-8502, Japan
a)Author to whom correspondence should be addressed: [email protected]
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Kenji Shinozaki
;
Kenji Shinozaki
2
National Institute of Advanced Industrial Science and Technology (AIST)
, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
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Daisuke Nakauchi;
Daisuke Nakauchi
3
Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST)
, 8916-5 Takayama-cho, Ikoma-shi, Nara 630-0192, Japan
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Hiromi Kimura
;
Hiromi Kimura
3
Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST)
, 8916-5 Takayama-cho, Ikoma-shi, Nara 630-0192, Japan
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Takayuki Yanagida
Takayuki Yanagida
3
Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST)
, 8916-5 Takayama-cho, Ikoma-shi, Nara 630-0192, Japan
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Naoki Kawano
1,a)
Kenji Shinozaki
2
Daisuke Nakauchi
3
Hiromi Kimura
3
Takayuki Yanagida
3
1
Graduate School of Engineering Science, Akita University
, 1-1 Tegata-Gakuenmachi, Akita-shi, Akita 010-8502, Japan
2
National Institute of Advanced Industrial Science and Technology (AIST)
, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
3
Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST)
, 8916-5 Takayama-cho, Ikoma-shi, Nara 630-0192, Japan
a)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the special collection on Hybrid Organic-Inorganic Halide Perovskites
J. Appl. Phys. 127, 213103 (2020)
Article history
Received:
March 11 2020
Accepted:
May 23 2020
Citation
Naoki Kawano, Kenji Shinozaki, Daisuke Nakauchi, Hiromi Kimura, Takayuki Yanagida; Scintillation properties of organic–inorganic layered perovskite nanocrystals in glass. J. Appl. Phys. 7 June 2020; 127 (21): 213103. https://doi.org/10.1063/5.0007084
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