Journal
ADVANCED ENERGY MATERIALS
Volume 6, Issue 17, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201600460
Keywords
carrier dynamics; high efficiency; interfaces; perovskite; solar cells
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Funding
- Young Talent Thousand Program
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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.
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