Journal
APL MATERIALS
Volume 4, Issue 10, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4963841
Keywords
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Funding
- DGIST R&D Program of the Ministry of Education, Science and Technology of Korea [16-EN-03]
- Ministry of Science, ICT & Future Planning, Republic of Korea [16-EN-03] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The power conversion efficiency of lead halide perovskite solar cells recently surpassed 22.1%. In this study, we suggest the perovskite absorber growth mechanism of the two-step process could be explained by an Ostwald ripening growth model for planar-structure perovskite solar cells. We attempt to find out the source of two main problems such as unreacted PbI2 and non-uniformed morphology by the proposed ripening growth mechanism and experimental results. This growth mechanism opens the way toward understanding a key aspect of the photovoltaic operation of high-efficiency, two-step perovskite solar cells. (C) 2016 Author(s).
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