Abstract

Hybrid organic/inorganic perovskites (e.g., CH3NH3PbI3) as light absorbers are promising players in the field of third-generation photovoltaics. Here we demonstrate a low-temperature vapor-assisted solution process to construct polycrystalline perovskite thin films with full surface coverage, small surface roughness, and grain size up to microscale. Solar cells based on the as-prepared films achieve high power conversion efficiency of 12.1%, so far the highest efficiency based on CH3NH3PbI3 with the planar heterojunction configuration. This method provides a simple approach to perovskite film preparation and paves the way for high reproducibility of films and devices. The underlying kinetic and thermodynamic parameters regarding the perovskite film growth are discussed as well.

Keywords

Perovskite (structure)Energy conversion efficiencyHeterojunctionPlanarChemistryPhotovoltaicsMicroscale chemistryCrystalliteThin filmPerovskite solar cellSolution processOptoelectronicsPhotovoltaic systemSurface roughnessNanotechnologyChemical engineeringMaterials scienceComposite materialCrystallography

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Year
2013
Type
article
Volume
136
Issue
2
Pages
622-625
Citations
2257
Access
Closed

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Qi Chen, Huanping Zhou, Ziruo Hong et al. (2013). Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process. Journal of the American Chemical Society , 136 (2) , 622-625. https://doi.org/10.1021/ja411509g

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DOI
10.1021/ja411509g