Journal article

Phase Transition Modulation and Defect Suppression in Perovskite Solar Cells Enabled by a Self-Sacrificed Template

Zhuang Xiong, Shanshan Chen, Pengjun Zhao, Yongjoon Cho, George Omololu Odunmbaku, Yujie Zheng, David J Jones, Changduk Yang, Kuan Sun

SOLAR RRL | WILEY-V C H VERLAG GMBH | Published : 2021

Abstract

Tunable crystal growth offering highly aligned perovskite crystallites with suppressed deep-level defects is vital for efficient charge transport, which in turn significantly influences the power conversion efficiency (PCE) of perovskite solar cells (PSCs). Herein, a “precursor to perovskite-like template to perovskite” (PPP) growth strategy is developed, using either MAAc or GuaCl precursor to induce a sacrificial thermal–unstable perovskite-like template for (FAPbI3)x(MAPbI3)y perovskite growth. The self-sacrificed intermediate template induces the formation of highly aligned perovskite crystals with greatly enhanced film crystallinity and suppresses deep-level defect formation. Furthermor..

View full abstract

University of Melbourne Researchers

Grants

Awarded by Natural Science Foundation of China


Awarded by Natural Science Foundation of Chongqing


Awarded by Fundamental Research Funds for the Central Universities


Awarded by Key Laboratory of Low-grade Energy Utilization Technologies and Systems


Funding Acknowledgements

This work was financially supported by research grants from the Natural Science Foundation of China (62074022 and 12004057), the Natural Science Foundation of Chongqing (cstc2018jszx-cyzdX0137 and cstc2020jcyj-msxmX0851), the Fundamental Research Funds for the Central Universities (2020CDJQY-A055 and 2020CDJ-LHZZ-044), and the Key Laboratory of Low-grade Energy Utilization Technologies and Systems (LLEUTS-201901).