Volume 6, Issue 7 2200168
Research Article

Amino Acid-Based Low-Dimensional Management for Enhanced Perovskite Solar Cells

Yingjie Hu

Yingjie Hu

Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Institute for Adv. Energy Mater, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

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Lili Gao

Corresponding Author

Lili Gao

Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Institute for Adv. Energy Mater, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

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Hang Su

Hang Su

Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

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Xinyi Du

Xinyi Du

Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Institute for Adv. Energy Mater, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

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Ningyi Yuan

Ningyi Yuan

School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou, 213164 China

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Jianning Ding

Jianning Ding

School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou, 213164 China

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Jing Zhang

Corresponding Author

Jing Zhang

Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Institute for Adv. Energy Mater, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

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Shengzhong (Frank) Liu

Corresponding Author

Shengzhong (Frank) Liu

Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Institute for Adv. Energy Mater, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119 China

Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 China

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First published: 23 April 2022
Citations: 1

Abstract

It has been reported that an overlayer of lower dimensional perovskite can effectively improve the properties of 3D perovskite solar cells. Here, 4-aminobutyric acid (C4I) and 6-aminocaproic acid iodides (C6I) are introduced onto the surface of the perovskite layer, forming a low-dimensional (LD) capping layer on the 3D perovskite films for high-performance devices. It is found that C4I forms a 2D perovskite layer, while C6I forms a 1D perovskite layer on the 3D perovskite surface. By using the LD capping layers, the integrated perovskite films show passivated surface traps, reduced defect density, improved carrier lifetimes, and altered band alignment, leading to improved fill factor and open-circuit voltage and, hence, significantly higher device efficiency. The devices with the C4I and C6I capping layers achieve solar cell efficiencies as high as 23.48% and 23.11%, respectively. In addition, bare devices with the C4I and C6I integration maintain 93.73% and 91.58%, respectively, of their initial efficiencies after exposure to the ambient atmosphere for 2000 h, demonstrating much better stability than the pristine 3D holding only 83.30% of its initial efficiency. It appears that this 2D capping is more suitable for enhancing 3D perovskite performance for general photoelectronic applications than the 1D capping.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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