Hybrid Vapor-Solution Sequentially Deposited Mixed-Halide Perovskite Solar Cells

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Date

2020-08-01

Author

Soltanpoor, Wiria
Dreessen, Chris
Şahiner, Mehmet Cem
Susic, Isidora
Afshord, Amir Zarean
Chirvony, Vladimir S.
Boix, Pablo P.
Günbaş, Emrullah Görkem
Yerci, Selçuk
Bolink, Henlk J.

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The recent sky-rocketing performance of perovskite solar cells has triggered a strong interest in further upgrading the fabrication techniques to meet the scalability requirements of the photovoltaic industry. The integration of vapor deposition into the solution process in a sequential fashion can boost the uniformity and reproducibility of the perovskite solar cells. In addition, mixed-halide perovskites have exhibited outstanding crystallinity and higher stability compared with iodide-only perovskite. An extensive study was carried out to identify a reproducible process leading to highly crystalline perovskite films that, when integrated into solar cells, exhibited a high power conversion efficiency (max. 19.8%). This was achieved by optimizing the deposition rate of the PbI2 layer and by inserting small amounts of methylammonium (MA) bromide and chloride salts to the primary MAI salt in the solution-based conversion step. The optimum MABr/MAI molar ratio leading to the most efficient and stable solar cells was found to be 0.4. Stabilities were in excess of 90 h for p-i-n type solar cells. This reproducible approach toward the fabrication of triple halide perovskites using a hybrid vapor-solution method is a promising method toward scalable production techniques

Subject Keywords

Perovskite, Solar cells, Vapor phase deposition, Interdiffusion, Halide-assisted crystallization

URI

https://hdl.handle.net/11511/52476

Journal

ACS APPLIED ENERGY MATERIALS

DOI

https://doi.org/10.1021/acsaem.0c00686

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

W. Soltanpoor et al., “Hybrid Vapor-Solution Sequentially Deposited Mixed-Halide Perovskite Solar Cells,” ACS APPLIED ENERGY MATERIALS, pp. 8257–8265, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52476.