Tuning the bandgap of double perovskites  

作　　者：Yu Zou Wenjin Yu Lixiu Zhang Cuncun Wu Lixin Xiao Liming Ding 

机构地区：[1]State Key Laboratory for Mesoscopic Physics,Department of Physics,Peking University,Beijing 100871,China [2]School of Materials Science and Engineering,State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China [3]Center for Excellence in Nanoscience(CAS),Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS),National Center for Nanoscience and Technology,Beijing 100190,China

出　　处：《Journal of Semiconductors》2021年第12期6-8,共3页半导体学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(61775004,61935016);the National Key Research and Development Program of China(2017YFA0206600);the National Natural Science Foundation of China(51773045,21772030,51922032,21961160720)for financial support.

摘　　要：With great achievements in efficiency,stability,and large-scale preparation of perovskite solar cells(PSCs),the com-mercialization of PSC is ongoing,but there is still an issue on lead toxicity.Although lead content in the device is low,the water solubility of lead salts leads to potential environmental pollution.At present,the non-lead perovskites studied in-clude:divalent metal perovskite(e.g.,Sn^(2+),Ge^(2+),Cu^(2+)),trivalent metal perovskite(e.g.,Bi^(3+),Sb^(3+),In^(3+)),tetravalent met-al double perovskite(e.g.,Sn^(4+),Pd^(4+),Ti^(4+),Pt^(4+))and mono-trivalent mixed double perovskite(e.g.,Ag+and Bi^(3+),Ag+and In^(3+),Ag^(+)and Sb^(3+)).Their properties are summarized in Table 1.Since the first report on non-lead double perovskite Cs2AgBiBr6 in 2016^([1]).

关 键 词：PEROVSKITE DOUBLE valent 

分 类 号：TB34[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]