The influence of fullerene on hysteresis mechanism in planar perovskite solar cells

被引：6
作者：
Yu, Man [1 ]
Wang, Hao-Yi [2 ,3 ]
Zhao, Jia-Shang [2 ]
Qin, Yujun [2 ]
Zhang, Jian-Ping [2 ]
Ai, Xi-Cheng [2 ]
机构：
[1] Xian Aeronaut Univ, Sch Mat Engn, Xian 710077, Shaanxi, Peoples R China
[2] Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China
[3] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, CAS Key Lab Soft Matter Phys, Beijing 100190, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2020年 / 750卷
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
PCBM; Planar perovskite solar cells; Hysteresis; Trap states; ORGANOMETAL HALIDE PEROVSKITES; CHARGE-CARRIER DYNAMICS; HIGH-PERFORMANCE; ION MIGRATION; V HYSTERESIS; TRANSPORT; BEHAVIOR; STATES; TIMES;
D O I：
10.1016/j.cplett.2020.137443
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Despite the rapid development of perovskite devices, the current density-voltage hysteresis still needs to be conquered. Here, the introduction of PCBM into the active layer of planar perovskite solar cells is carried out and hysteresis-free devices are produced. A photoluminescence blue-shift in PCBM-doped perovskite films is observed. The effect of non-radiative recombination is obviously suppressed, and the photoluminescence lifetime is significantly prolonged by 3-fold after PCBM introduction. The roles of PCBM in trap states and hysteresis mechanism are also discussed. This research could provide experimental and theoretical supports for suppressing and eliminating the hysteresis phenomena in perovskite solar cells.
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收藏
页数：6
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