UV-Inert ZnTiO3 Electron Selective Layer for Photostable Perovskite Solar Cells

Wei J, Guo F, Liu B, Sun X, Wang X, Yang Z, Xu K, Lei M, Zhao Y, Xu D (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Advanced Energy Materials Wiley

DOI: 10.1002/aenm.201901620

Abstract

Although planar-structured perovskite solar cells (PSCs) have power conversion efficiencies exceeding 24%, the poor photostability, especially with ultraviolet irradiance (UV) severely limits commercial application. The most commonly-used TiO2 electron selective layer has a strong photocatalytic effect on perovskite/TiO2 interface when TiO2 is excited by UV light. Here a UV-inert ZnTiO3 is reported as the electron selective layer in planar PSCs. ZnTiO3 is a perovskite-structured semiconductor with excellent chemical stability and poor photocatalysis. Solar cells are fabricated with a structure of indium doped tin oxide (ITO)/ZnTiO3/Cs(0.05)FA(0.81)MA(0.14)PbI(2.55)Br(0.45)/Sprio-MeOTAD/Au. The champion device exhibits a stabilized power conversion efficiency of 19.8% with improved photostability. The device holds 90% of its initial efficiency after 100 h of UV soaking (365 nm, 8 mW cm(-2)), compared with 55% for TiO2-based devices. This work provides a new class of electron selective materials with excellent UV stability in perovskite solar cell applications.

Authors with CRIS profile

Yicheng Zhao Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Beijing University of Posts and Telecommunications (BUPT) / 北京邮电大学 CN China (CN) Peking University (PKU) / 北京大学 CN China (CN)

How to cite

APA:

Wei, J., Guo, F., Liu, B., Sun, X., Wang, X., Yang, Z.,... Xu, D. (2019). UV-Inert ZnTiO3 Electron Selective Layer for Photostable Perovskite Solar Cells. Advanced Energy Materials. https://dx.doi.org/10.1002/aenm.201901620

MLA:

Wei, Jing, et al. "UV-Inert ZnTiO3 Electron Selective Layer for Photostable Perovskite Solar Cells." Advanced Energy Materials (2019).

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