Scintillation properties of (C<sub>6</sub>H<sub>5</sub>C<i> <sub>n</sub> </i>H<sub>2<i>n</i> </sub>NH<sub>3</sub>)<sub>2</sub>PbCl<sub>4</sub> (<i>n</i> = 1–4)
Takeru Suto, Naoki Kawano, Kai Okazaki, Yuma Takebuchi, Hiroyuki Fukushima, Takumi Kato, Daisuke Nakauchi, Takayuki Yanagida
Abstract
Abstract Organic–inorganic perovskite crystals (C 6 H 5 C n H 2 n NH 3 ) 2 PbCl 4 ( n = 1: PMA, n = 2: PEA, n = 3: PPA, and n = 4: PBA) were prepared, and their scintillation characteristics were evaluated. A broad emission peak originating from self-trapped excitons (STE) was observed from all of the crystals when excited by 310 nm light. Further, the broad emission was also clearly observed from PMA, PEA, and PBA under X-ray. Moreover, the scintillation light yields under α -ray were calculated to be 1460 (PEA), 439 (PPA), and 120 (PBA) photons/5.5 MeV- α , and the light yield of PEA was higher than that of a ZnO single crystal. In addition, all of the crystals showed a fast decay-time attributable to STE under X-ray.