Crystal Growth, Luminescence and Scintillation Characterizations of Cs<sub>2</sub>KLaCl<sub>6</sub>:Ce and Cs<sub>2</sub>KCeCl<sub>6</sub>
Haoyu Wang,
Jianhui Xiong,
Man Li,
Jufeng Geng,
Shangke Pan,
Jianguo Pan
Affiliations
Haoyu Wang
State Key Base of Functional Material & Its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Institute of Materials Science &Chemical Engineering, Ningbo University, Ningbo 315211, China
Jianhui Xiong
State Key Base of Functional Material & Its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Institute of Materials Science &Chemical Engineering, Ningbo University, Ningbo 315211, China
Man Li
State Key Base of Functional Material & Its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Institute of Materials Science &Chemical Engineering, Ningbo University, Ningbo 315211, China
Jufeng Geng
State Key Base of Functional Material & Its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Institute of Materials Science &Chemical Engineering, Ningbo University, Ningbo 315211, China
Shangke Pan
State Key Base of Functional Material & Its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Institute of Materials Science &Chemical Engineering, Ningbo University, Ningbo 315211, China
Jianguo Pan
State Key Base of Functional Material & Its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Institute of Materials Science &Chemical Engineering, Ningbo University, Ningbo 315211, China
Elpasolite halides scintillation crystals have been proven to be very important materials for X-ray and γ-ray detector applications. The crystals of Cs2KLaCl6:4% Ce (CKLC) and Cs2KCeCl6 (CKCC) belong to novel scintillation of the Chloro-elpasolite crystal family. In this paper, the crystal growth of CKLC and CKCC crystals using the vertical Bridgman techniques were reported. The PXRD patterns showing both crystals have a cubic crystal structure. Both crystals have similar photoluminescence excitation and emission spectra, the fluorescence decay time of CKLC and CKCC crystals were about 49.7 and 33.8 ns. The energy resolution under the excitation of 662 keV γ-rays from a 137Cs source were found to be 6.6% and 5.2% (FWHM), respectively. The scintillation decay times of CKLC crystal were τ1 = 127 ns (33%) and τ2 = 1617 ns (67%), while that of CKCC crystal were τ1 = 2.86 ns (5%) and τ2 = 81 ns (95%).
