DataVXSolar RRLPaper
journal article·2022-07

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

Yingjie Hu, Lili Gao, Hang Su, Xinyi Du, Ningyi Yuan, Jianning Ding, Jing Zhang, Shengzhong (Frank) Liu

Solar RRL· Volume 6· Issue 7
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Source abstract

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.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

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

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

Funding

National Natural Science Foundation of China · China Postdoctoral Science Foundation

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