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Published on: February 27, 2017
Trap-tuning in afterglow perovskite crystals through alkali metal ion doping
Yihan Shi1, Xiangzhou Zhang1, Xiangxiang Chen1
1Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, Shandong, P. R. China. ifc_zhangyh@ujn.edu.cn.
Abstract:
Herein, we report a trap-tuning strategy involving alkali metal ions of Li+ and K+, which enabled a fine tuning of afterglow traps at 250 K. Through Li+/K+ doping, a red afterglow from Cs2AgInCl6:Mn was activated at room temperature, which was extended up to 3600 s at low temperature. Thermoluminescence measurement revealed a shallow trap at ∼0.50 eV below the conduction band, which could be shifted up- and down-ward by dopant species.

