Unraveling the Light-Induced Degradation Mechanisms of CH3NH3PbI3 Perovskite Films

被引:149
作者
Nickel, Norbert H. [1 ]
Lang, Felix [1 ]
Brus, Victor V. [1 ]
Shargaieva, Oleksandra [1 ]
Rappich, Joerg [1 ]
机构
[1] Helmholtz Zentrum Berlin Mat & Energie GmbH, Inst Silizium Photovolta, Kekulestr 5, D-12489 Berlin, Germany
来源
ADVANCED ELECTRONIC MATERIALS | 2017年 / 3卷 / 12期
关键词
isotope experiments; light-induced degradation in vacuum and oxygen atmosphere; organic-inorganic perovskite; HIGH-PERFORMANCE; ELECTRONIC-PROPERTIES; TRIHALIDE PEROVSKITE; SOLAR-CELLS; OXYGEN; EFFICIENCY;
D O I
10.1002/aelm.201700158
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Organic-inorganic perovskite solar cells have experienced a remarkable development. In a short period of time power conversion efficiencies have jumped to values of more than 22%. However, the stability of these devices is an important subject. The stability of CH3NH3PbI3 perovskite films is investigated using visible and ultraviolet light in oxygen atmosphere and in vacuum. Illumination in O-2 atmosphere results in a swift degradation. Oxygen acts as a catalyst decomposing methylammonium ions (CH3NH3+) into CH3NH2 and hydrogen. In vacuum, another degradation mechanism is observed. Prolonged illumination of the samples with photons from blue and UV light-emitting diodes also results in dissociation of the methylammonium ion into CH3NH2 and hydrogen. In both cases the resulting molecules are highly mobile at room temperature and diffuse out of the samples. The light-induced dissociation of CH3NH3+ is accompanied by the generation of localized defects in the band gap of the perovskite. Furthermore, the experimental data clearly show that the molecular orbitals of CH3NH3+ are not in resonance with the energy bands of the perovskite lattice.
引用
收藏
页数:9
相关论文
共 37 条
[1]   Mechanisms for light induced degradation in MAPbI3 perovskite thin films and solar cells [J].
Abdelmageed, Ghada ;
Jewell, Leila ;
Hellier, Kaitlin ;
Seymour, Lydia ;
Luo, Binbin ;
Bridges, Frank ;
Zhang, Jin Z. ;
Carter, Sue .
APPLIED PHYSICS LETTERS, 2016, 109 (23)
[2]   High-Performance Perovskite-Polymer Hybrid Solar Cells via Electronic Coupling with Fullerene Monolayers [J].
Abrusci, Agnese ;
Stranks, Samuel D. ;
Docampo, Pablo ;
Yip, Hin-Lap ;
Jen, Alex K-Y. ;
Snaith, Henry J. .
NANO LETTERS, 2013, 13 (07) :3124-3128
[3]   Fast oxygen diffusion and iodide defects mediate oxygen-induced degradation of perovskite solar cells [J].
Aristidou, Nicholas ;
Eames, Christopher ;
Sanchez-Molina, Irene ;
Bu, Xiangnan ;
Kosco, Jan ;
Islam, M. Saiful ;
Haque, Saif A. .
NATURE COMMUNICATIONS, 2017, 8
[4]   The Role of Oxygen in the Degradation of Methylammonium Lead Trihalide Perovskite Photoactive Layers [J].
Aristidou, Nicholas ;
Sanchez-Molina, Irene ;
Chotchuangchutchaval, Thana ;
Brown, Michael ;
Martinez, Luis ;
Rath, Thomas ;
Haque, Saif A. .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2015, 54 (28) :8208-8212
[5]   Low-temperature processed meso-superstructured to thin-film perovskite solar cells [J].
Ball, James M. ;
Lee, Michael M. ;
Hey, Andrew ;
Snaith, Henry J. .
ENERGY & ENVIRONMENTAL SCIENCE, 2013, 6 (06) :1739-1743
[6]  
Bard A. J., 1985, STANDARD POTENTIALS
[7]   Light and oxygen induced degradation limits the operational stability of methylammonium lead triiodide perovskite solar cells [J].
Bryant, Daniel ;
Aristidou, Nicholas ;
Pont, Sebastian ;
Sanchez-Molina, Irene ;
Chotchunangatchaval, Thana ;
Wheeler, Scot ;
Durrant, James R. ;
Haque, Saif A. .
ENERGY & ENVIRONMENTAL SCIENCE, 2016, 9 (05) :1655-1660
[8]   Sequential deposition as a route to high-performance perovskite-sensitized solar cells [J].
Burschka, Julian ;
Pellet, Norman ;
Moon, Soo-Jin ;
Humphry-Baker, Robin ;
Gao, Peng ;
Nazeeruddin, Mohammad K. ;
Graetzel, Michael .
NATURE, 2013, 499 (7458) :316-+
[9]  
Chang YH, 2004, J KOREAN PHYS SOC, V44, P889
[10]   Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process [J].
Chen, Qi ;
Zhou, Huanping ;
Hong, Ziruo ;
Luo, Song ;
Duan, Hsin-Sheng ;
Wang, Hsin-Hua ;
Liu, Yongsheng ;
Li, Gang ;
Yang, Yang .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (02) :622-625