Perspective: Understanding of ripening growth model for minimum residual PbI2 and its limitation in the planar perovskite solar cells | Zendy

SeYun Kim | Zendy; Hyo Jeong Jo | Zendy; ShiJoon Sung | Zendy; DaeHwan Kim | Zendy

Open Access

Perspective: Understanding of ripening growth model for minimum residual PbI2 and its limitation in the planar perovskite solar cells

Author(s) -

SeYun Kim,

Hyo Jeong Jo,

ShiJoon Sung,

DaeHwan Kim

Publication year - 2016

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4963841

Subject(s) - ostwald ripening , perovskite (structure) , materials science , photovoltaic system , planar , energy conversion efficiency , halide , solar cell , perovskite solar cell , crystal growth , nanotechnology , engineering physics , chemical engineering , optoelectronics , inorganic chemistry , crystallography , chemistry , computer science , electrical engineering , physics , computer graphics (images) , engineering

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

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