Scintillation properties of (H3NCnH2nNH3)PbBr4 (n = 8, 10, 12). (1st March 2023)

• Record Type: Journal Article
• Authors: Nagaoka, Ryo; Kawano, Naoki; Takebuchi, Yuma; Fukushima, Hiroyuki; Shiratori, Daiki; Kato, Takumi; Nakauchi, Daisuke; Yanagida, Takayuki
• Is Part Of: Japanese journal of applied physics. Volume 62:Number SA(2023)
• Publication Date: 2023-03-01
• Subjects: scintillator -- exciton -- quantum well -- radiation; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/acbff5
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: We prepared (H3 NC8 H16 NH3 )PbBr4 (1–8DIO), (H3 NC10 H20 NH3 )PbBr4 (1–10DID), and (H3 NC12 H24 NH3 )PbBr4 (1-12DIDD) crystals, and evaluated the photoluminescence (PL) and scintillation characteristics. A luminescence peak derived from free excitons was detected at around 400 nm from the crystals in the PL spectra, and the quantum yields were 8% (1-8DIO), 13% (1-10DID), and 7% (1-12DIDD). Also, scintillation light yields were determined to be 5070 photons MeV –1 for the 1-8DIO crystal, 2400 photons MeV –1 for the 1-10DID crystal, and 830 photons MeV –1 for the 1-12DIDD crystal, and they had a fast scintillation decay time of 4.8 ns (1-8DIO), 6.8 ns (1-10DID), and 3.1 ns (1-12DIDD) owing to the free exciton emissions.