Solvent engineering of scalable deposited wide-bandgap perovskites for efficient monolithic perovskite-organic tandem solar cells

Tang Y, Zhang Y, Zhou X, Huang T, Shen K, Zhang KN, Du X, Shi T, Xiao X, Li N, Brabec C, Mai Y, Guo F (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Nano Energy Elsevier

Book Volume: 114

Article Number: 108653

DOI: 10.1016/j.nanoen.2023.108653

Abstract

High-quality wide-bandgap perovskite films are a key component in constructing efficient tandem solar cells. Although the efficiency of perovskite tandem devices advances rapidly in recent years, the majority of wide-bandgap perovskite films are deposited by laboratory spin-coating, which greatly hinders their commercial viability. Here, we first show that the widely-used binary solvents (DMF:DMSO) in spin-coating are incapable of producing qualified wide-bandgap perovskite films by scalable methods. It is identified that dense and uniform wide-bandgap thin films can be deposited from single-solvent NMP by blade-coating, which is mainly related to the well-controlled crystallization kinetics enabled by the formation of stable intermediate adduct. Along with a rational passivation by constructing a 2D/3D layered heterojunction, inverted perovskite devices with a bandgap of 1.8 eV deliver a champion efficiency of 18.92 %. On this basis, monolithic perovskite-organic tandem solar cells with an efficient and robust interconnection layer of “SnO2/Au/PEDOT:PSS” are fabricated, yielding a high efficiency of 22.25 % along with an impressive open-circuit voltage of 2.1 V. These results demonstrate an important step toward scalable fabrication of monolithic perovskite-organic tandem solar devices.

Authors with CRIS profile

Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Xi'an University of Architecture and Technology (XAUAT) / 西安建筑科技大学 CN China (CN) Jinan University CN China (CN) Shandong-University (SDU) CN China (CN) Guangzhou Institute of Energy Conversion (GIEC) CN China (CN) South China University of Technology (SCUT) / 华南理工大学 CN China (CN)

How to cite

APA:

Tang, Y., Zhang, Y., Zhou, X., Huang, T., Shen, K., Zhang, K.N.,... Guo, F. (2023). Solvent engineering of scalable deposited wide-bandgap perovskites for efficient monolithic perovskite-organic tandem solar cells. Nano Energy, 114. https://doi.org/10.1016/j.nanoen.2023.108653

MLA:

Tang, Yun, et al. "Solvent engineering of scalable deposited wide-bandgap perovskites for efficient monolithic perovskite-organic tandem solar cells." Nano Energy 114 (2023).

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