Mixed 2D-Dion-Jacobson/3D Sn-Pb alloyed perovskites for efficient photovoltaic solar devices

Lu Z, Li C, Lai H, Zhou X, Wang C, Liu X, Guo F, Pan C (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Nano Research Springer Verlag (Germany)

DOI: 10.1007/s12274-022-4894-1

Abstract

Tin-lead (Sn-Pb) alloyed perovskites with tunable bandgaps hold great potential for constructing highly efficient single-junction and tandem photovoltaic devices. However, the efficiency and stability of Sn-Pb perovskite solar cells (PSCs) are greatly hampered by severe nonradiative recombination due to the easy oxidation of Sn(II). In this work, we report the construction of mixed dimensional two-dimensional (2D) Dion-Jacobson (DJ) and three-dimensional (3D) perovskites to improve the efficiency and stability of Sn-Pb alloyed PSCs. Introducing a small amount of 1,4-butanediammonium diiodide as spacer cations of DJ perovskites into precursor, the prepared mixed dimensional Sn-Pb alloyed perovskites exhibit reduced trap-state density due to the passivation of 2D DJ perovskites. As a result, nonradiative charge recombination is greatly suppressed. The prepared Sn-Pb alloyed PSCs based on 2D-DJ/3D heterojunction deliver a power conversion efficiency of 19.02% with an impressive fill factor of 80%. As well, improved device stability is realized due to the presence of DJ perovskites which serves as a protection barrier against oxidation and water invasion.

Authors with CRIS profile

Chaohui Li Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Jinan University CN China (CN) Zhengzhou University / 郑州大学 CN China (CN) Chinese Academy of Sciences (CAS) / 中国科学院 CN China (CN)

How to cite

APA:

Lu, Z., Li, C., Lai, H., Zhou, X., Wang, C., Liu, X.,... Pan, C. (2022). Mixed 2D-Dion-Jacobson/3D Sn-Pb alloyed perovskites for efficient photovoltaic solar devices. Nano Research. https://doi.org/10.1007/s12274-022-4894-1

MLA:

Lu, Zhili, et al. "Mixed 2D-Dion-Jacobson/3D Sn-Pb alloyed perovskites for efficient photovoltaic solar devices." Nano Research (2022).

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