DataVXAdvanced MaterialsPaper
journal article·2024-01

In Situ Formation of 2D Perovskite Seeding for Record‐Efficiency Indoor Perovskite Photovoltaic Devices

Yong Li, Ting Nie, Xiaodong Ren, Yin Wu, Jing Zhang, Pengjun Zhao, Yuying Yao, Yucheng Liu, Jiangshan Feng, Kui Zhao, Wenhua Zhang, Shengzhong Liu

Advanced Materials· Volume 36· Issue 1
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Source abstract

Abstract

Abstract With 40% efficiency under room light intensity, perovskite solar cells (PSCs) will be promising power supplies for low‐light applications, particularly for Internet of Things (IoT) devices and indoor electronics, shall they become commercialized. Herein, β‐alaninamide hydrochloride (AHC) is utilized to spontaneously form a layer of 2D perovskite nucleation seeds for improved film uniformity, crystallization quality, and solar cell performance. It is found that the AHC addition indeed improves film quality as demonstrated by better uniformity, lower trap density, smaller lattice stress, and, as a result, a 10‐fold increase in charge carrier lifetime. Consequently, not only does the small‐area (0.09 cm2) PSCs achieve a power conversion efficiency of 42.12%, the large‐area cells (1.00 cm2, and 2.56 cm2) attain efficiency as high as 40.93%, and 40.07% respectively. All of these are the highest efficiency values for indoor photovoltaic cells with similar sizes, and more importantly, they represent the smallest efficiency loss due to area scale‐up. This work provides a new method to fabricate high‐performance indoor PSCs (i‐PSCs) for IoT devices with great potential in large‐area printing technology.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

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

Affiliations

Yunnan Key Laboratory for Micro/Nano Materials & Technology International Joint Research Center for Optoelectronic and Energy Materials School of Materials and Energy Yunnan University Kunming Yunnan 650091 China

Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China

Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences Urumqi Xinjiang 830011 China

Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Liaoning 116023 China

Funding

Natural Science Foundation of Xinjiang Uygur Autonomous Region · National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Fundamental Research Funds for the Central Universities · Shanxi Provincial Science and Technology Department · Program for Changjiang Scholars and Innovative Research Team in University

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