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In Situ TEM Analysis of Organic-Inorganic Metal-Halide Perovskite Solar Cells under Electrical Bias
被引:120
|作者:
Jeangros, Quentin
[1
,2
]
Duchamp, Martial
[3
,4
,5
]
Werner, Jeremie
[1
]
Kruth, Maximilian
[3
,4
]
Dunin-Borkowski, Rafal E.
[3
,4
]
Niesen, Bjoern
[1
]
Ballif, Christophe
[1
]
Hessler-Wyser, Aicha
[1
]
机构:
[1] Ecole Polytech Fed Lausanne, Inst Microengn IMT, Photovolta & Thin Film Elect Lab, Rue Maladiere 71B, CH-2000 Neuchatel, Switzerland
[2] Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland
[3] Forschungszentrum Julich, Ernst Ruska Ctr Microscopy & Spect Electrons, D-52425 Julich, Germany
[4] Forschungszentrum Julich, Peter Grunberg Inst, D-52425 Julich, Germany
[5] Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore, Singapore
基金:
瑞士国家科学基金会;
欧盟第七框架计划;
关键词:
Characterization;
in situ transmission electron microscopy;
microstructure;
degradation;
photovoltaics;
perovskite solar cell;
INDUCED DEGRADATION;
LEAD IODIDE;
MIGRATION;
CH3NH3PBI3;
LIGHT;
D O I:
10.1021/acs.nanolett.6b03158
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Changes in the nanostructure of methylammonium lead iodide (MAPbI(3)) perovskite solar cells are assessed as a function of current-voltage stimulus by biasing thin samples in situ in a transmission electron microscope. Various degradation pathways are identified both in situ and ex situ, predominantly at the positively biased MAPbI(3) interface. Iodide migrates into the positively biased charge transport layer and also volatilizes along with organic species, which triggers the nucleation of PbI2 nanoparticles and voids and hence decreases the cell performance.
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页码:7013 / 7018
页数:6
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