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Inhomogeneous degradation in metal halide perovskites
Nanjing Technical University, Peoples R China.
Nanjing Technical University, Peoples R China.
Nanjing Technical University, Peoples R China.
Nanjing Technical University, Peoples R China.
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2017 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 111, no 7, article id 073302Article in journal (Refereed) Published
Abstract [en]

Although the rapid development of organic-inorganic metal halide perovskite solar cells has led to certified power conversion efficiencies of above 20%, their poor stability remains a major challenge, preventing their practical commercialization. In this paper, we investigate the intrinsic origin of the poor stability in perovskite solar cells by using a confocal fluorescence microscope. We find that the degradation of perovskite films starts from grain boundaries and gradually extend to the center of the grains. Firmly based on our findings, we further demonstrate that the device stability can be significantly enhanced by increasing the grain size of perovskite crystals. Our results have important implications to further enhance the stability of optoelectronic devices based on metal halide perovskites. Published by AIP Publishing.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2017. Vol. 111, no 7, article id 073302
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-140803DOI: 10.1063/1.4999630ISI: 000407948100031OAI: oai:DiVA.org:liu-140803DiVA: diva2:1140882
Note

Funding Agencies|National Basic Research Program of China-Fundamental Studies of Perovskite Solar Cells [2015CB932200]; Natural Science Foundation of Jiangsu Province, China [BK20140952, BK20150043]; National Natural Science Foundation of China [11474164, 61405091, 61634001]; Joint Research Program between China and European Union [2016YFE0112000]; Synergetic Innovation Center for Organic Electronics and Information Displays; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant) [SFO-Mat-LiU 2009-00971]; Swedish Research Council (VR); European Commission Marie Sklodowska-Curie actions [691210]

Available from: 2017-09-13 Created: 2017-09-13 Last updated: 2017-12-05

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Citation style
  • apa
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