DataVXAdvanced MaterialsPaper
journal article·2023-11

Enhanced Resonance for Facilitated Modulation of Large‐Area Perovskite Films with Stable Photovoltaics

Ligang Xu, Haodong Ji, Wei Qiu, Xin Wang, Yan Liu, Yuanhao Li, Jing Li, Xin Zhang, Daiquan Zhang, Jiexue Wang, Ye Tao, Meicheng Li, Runfeng Chen

Advanced Materials· Volume 35· Issue 47
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Source abstract

Abstract

Abstract Upscaling efficient and stable perovskite films is a challenging task in the industrialization of perovskite solar cells partly due to the lack of high‐performance hole transport materials (HTMs), which can simultaneously promote hole transport and regulate the quality of perovskite films especially in inverted solar cells. Here, a novel HTM based on N–C = O resonance structure is designed for facilitating the modulation of the crystallization and bottom‐surface defects of perovskite films. Benefiting from the resonance interconversion (N–C = O and N+ = C–O−) in donor‐resonance‐donor (D‐r‐D) architecture and interactions with uncoordinated Pb2+ in perovskite, the resulting D‐r‐D HTM with two donor units exhibits not only excellent hole extraction and transport capacities, but also efficient crystallization modulation of perovskite for high‐quality photovoltaic films in large area. The D‐r‐D HTM‐based large‐area (1.02 cm2) devices exhibit high power conversion efficiencies (PCEs) up to 21.0%. Moreover, the large‐area devices have excellent photo‐thermal stability, showing only a 2.6% reduction in PCE under continuous AM 1.5G light illumination at elevated temperature (≈65 °C) for over 1320 h without encapsulation.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Solid-state spectroscopy and crystallography · Organic and Molecular Conductors Research

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

Affiliations

Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) Nanjing University of Posts & Telecommunications 9 Wenyuan Road Nanjing 210023 China

Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology 1037 Geyu Road Wuhan Hubei 430074 China

School of Environment and Energy Peking University Shenzhen Graduate School 1120 Lianhua Road Shenzhen 518055 China

Department of Civil and Environmental Engineering Carnegie Mellon University Pittsburgh PA 15213 USA

Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences 29 Zhongguancun east road Beijing 100190 China

College of Chemistry and Life Science Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules Chengdu Normal University 4 Baishou Road Chengdu 611130 China

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of New Energy North China Electric Power University 2 Beinong Road Beijing 102206 China

School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou 310018 China

Funding

National Natural Science Foundation of China · Beijing Municipal Natural Science Foundation · State Key Laboratory Of Alternate Electrical Power System With Renewable Energy Sources

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