Issue 30, 2019

Efficient large guanidinium mixed perovskite solar cells with enhanced photovoltage and low energy losses

Abstract

We present a strategy for suppressing the open-circuit voltage (Voc) loss of perovskite solar cells by incorporating large guanidinium cations (Gua+) into a perovskite lattice, leading to a significantly improved Voc of 1.19 V and an impressive power conversion efficiency of >21%. Our results manifest the critical role of Gua in passivating defects and highlight the importance of compositional engineering in promoting the performance of perovskites.

Graphical abstract: Efficient large guanidinium mixed perovskite solar cells with enhanced photovoltage and low energy losses

  • This article is part of the themed collection: Perovskites

Supplementary files

Article information

Article type
Communication
Submitted
02 jan 2019
Accepted
18 mar 2019
First published
19 mar 2019

Chem. Commun., 2019,55, 4315-4318

Author version available

Efficient large guanidinium mixed perovskite solar cells with enhanced photovoltage and low energy losses

S. Wu, Z. Li, J. Zhang, T. Liu, Z. Zhu and A. K.-Y. Jen, Chem. Commun., 2019, 55, 4315 DOI: 10.1039/C9CC00016J

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