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The Progress of Interface Design in Perovskite‐Based Solar Cells
Author(s) -
Fan Rundong,
Huang Yuan,
Wang Ligang,
Li Liang,
Zheng Guanhaojie,
Zhou Huanping
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201600460
Subject(s) - perovskite (structure) , photovoltaic system , photovoltaics , materials science , ambipolar diffusion , engineering physics , optoelectronics , hysteresis , band gap , nanotechnology , electrical engineering , electron , chemistry , engineering , physics , quantum mechanics , crystallography
Organic–inorganic halide perovskite has received extensive attention as a light harvester for next‐generation low‐cost and high‐performance photovoltaics. Its superior optoelectronic properties are attractive among most thin film absorber materials, such as an extremely high absorption coefficient, optimal band gap, ambipolar carrier transport property, and high defects tolerance. However, it requires suitable electrodes and carrier transport materials to fulfill efficient photovoltaic process within an entire device. Thus, the interfaces along the device play a crucial role in determining device photovoltaic performance. Here, the progress of understanding interfaces in perovskite photovoltaics is reviewed from the perspective of processing chemistry and photophysics of carriers, which are the key parameters for the corresponding device photovoltaic behavior. This study is mainly focused on the relevant working mechanism, interface design fundamentals, and the resulting carrier dynamic control over the entire architecture. The study of the interfaces with appropriate materials design provides a fundamental understanding of the photocarrier behavior, including separation, transportation, and collection. The accumulative efforts will contribute to the construction of high‐efficiency perovskite‐based single junction and multijunction photovoltaic devices. It also affects other properties of perovskite solar cells, including J – V hysteresis phenomenon, and long‐term stability. Suggestions with respect to required improvements and future research directions are provided based on the current field of available literature.