Electrochemical Lithium Doping Induced Property Changes\nIn Halide Perovskite CsPbBr<sub>3</sub> Crystal
Qinglong Jiang (1720675)Xiaoqiao Zeng (3627977)Ning Wang (108353)Zhili Xiao (4228750)Zhanhu Guo (1492291)Jun Lu (36049)
Abstract
Electrochemical\ndoping was used to dope lithium into perovskite\nCsPbBr<sub>3</sub> crystal. Due to the doping, diamagnetic behavior\nwas observed with a transition temperature (<i>T</i><sub>c</sub>) of 7.17 K. Burstein–Moss effect related photoluminescence\n(PL) blue-shift was observed as long as 15 nm. UV–vis-NIR spectra\nindicate that the absorption has been enhanced. The doped CsPbBr<sub>3</sub> crystal generated 8 nA photocurrent, which is higher than\nthe undoped CsPbBr<sub>3</sub> crystal.
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