Issue

Vol. 15 (2023)

Progress and Challenges Toward Effective Flexible Perovskite Solar Cells

https://doi.org/10.1007/s40820-023-01165-8
Xiongjie Li
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Haixuan Yu
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Zhirong Liu
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Junyi Huang
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Xiaoting Ma
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Yuping Liu
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Qiang Sun
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Letian Dai
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Shahzada Ahmad
BCMaterials, Basque Center for Materials, Applications and Nanostructures, University of Basque Country Science Park, 48940 Leioa, Spain
Yan Shen
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China
Mingkui Wang
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, People’s Republic of China

Corresponding Author: Mingkui Wang

mingkui.wang@mail.hust.edu.cn

Nano-Micro Letters, Vol. 15 (2023), Article Number: 206

Abstract

The demand for building-integrated photovoltaics and portable energy systems based on flexible photovoltaic technology such as perovskite embedded with exceptional flexibility and a superior power-to-mass ratio is enormous. The photoactive layer, i.e., the perovskite thin film, as a critical component of flexible perovskite solar cells (F-PSCs), still faces long-term stability issues when deformation occurs due to encountering temperature changes that also affect intrinsic rigidity. This literature investigation summarizes the main factors responsible for the rapid destruction of F-PSCs. We focus on long-term mechanical stability of F-PSCs together with the recent research protocols for improving this performance. Furthermore, we specify the progress in F-PSCs concerning precise design strategies of the functional layer to enhance the flexural endurance of perovskite films, such as internal stress engineering, grain boundary modification, self-healing strategy, and crystallization regulation. The existing challenges of oxygen-moisture stability and advanced encapsulation technologies of F-PSCs are also discussed. As concluding remarks, we propose our viewpoints on the large-scale commercial application of F-PSCs.


Highlights:
1 Critical issues including mechanical stability, water and oxygen resistance, transparent electrodes for flexible perovskite solar cells are discussed.
2 Roll-to-Roll technology presents a promising avenue for fabrication of flexible perovskite solar cells fabricated for large-scale commercial application.
3 Balancing the transmittance and conductivity of transparent electrodes has become a significant issue in developing efficient flexible perovskite solar cells.

Keywords

Flexible photovoltaics Perovskite Internal stress Flexural endurance Self-healing Long-term stability
Li, Xiongjie, Haixuan Yu, Zhirong Liu, Junyi Huang, Xiaoting Ma, Yuping Liu, Qiang Sun, Letian Dai, Shahzada Ahmad, Yan Shen, and Mingkui Wang. 2023. “Progress and Challenges Toward Effective Flexible Perovskite Solar Cells”. Nano-Micro Letters 15 (August):206. https://doi.org/10.1007/s40820-023-01165-8.
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