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Antimony doped CsPbI_(2)Br for high-stability all-inorganic perovskite solar cells

Nano Research 2024年第3期17卷 1508-1515页

作者： Mengfei Zhu Lina Qin Yuren Xia Junchuan Liang Yaoda Wang Daocheng Hong Yuxi Tian Zuoxiu Tie Zhong Jin State Key Laboratory of Coordination Chemistry Ministry of Education(MOE)Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Nanjing Tieming Energy Technology Co. Ltd.Nanjing 210093China Suzhou Tierui New Energy Technology Co. Ltd.Suzhou 215228China

All-inorganic perovskites,adopting cesium(Cs+)cation to completely replace the organic component of A-sites of hybrid organic–inorganic halide perovskites,have attracted much attention owing to the excellent thermal ***,all-inorganic iodine-based perovskites generally exhibit poor phase stability in ambient ***,we propose an efficient strategy to introduce antimony(sb^(3+))into the crystalline lattices of CsPbI_(2)Br perovskite,which can effectively regulate the growth of perovskite crystals to obtain a more stable perovskite *** to the much smaller ionic radius and lower electronegativity of trivalent sb^(3+)than those of Pb^(2+),the sb^(3+)doping can decrease surface defects and suppress charge recombination,resulting in longer carrier lifetime and negligible *** a result,the all-inorganic perovskite solar cells(PSCs)based on 0.25%sb^(3+)doped CsPbI_(2)Br light absorber and screen-printable nanocarbon counter electrode achieved a power conversion efficiency of 11.06%,which is 16%higher than that of the control devices without sb^(3+)***,the sb^(3+)doped all-inorganic PSCs also exhibited greatly improved endurance against heat and *** to the use of low-cost and easy-to-process nanocarbon counter electrodes,the manufacturing process of the all-inorganic PSCs is very convenient and highly repeatable,and the manufacturing cost can be greatly *** work offers a promising approach to constructing high-stability all-inorganic PSCs by introducing appropriate lattice doping.

关键词： all-inorganic perovskite solar cells sb doped cesium lead halide perovskites foreign B-site ions hole-conductor-free phase stability improvement

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