Xiaozhen Huang , Zilong Zhang , Yuheng Li , Liangliang Zhang , Can Wang , Lusheng Liang , Chi Li , Chunming Liu , Zhehong Zhou , Ruidan Zhang , Yue Wang , Mingwei An , Yang Wang , Peng Gao
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引用次数: 0
Abstract
Exploring multifunctional interfacial modifiers is an effective approach to addressing interface issues in perovskite solar cells (PSCs) and improving device performance and stability. While most interfacial modifiers focus on passivating defects at the interfaces, there has been limited investigation into the relationship between molecular design and interfacial charge dynamics. This work introduces resonance molecules with a push-pull effect for interfacial modification, allowing for synergistic regulation of passivation effects and charge dynamics. Specifically, FCz-PO, which includes an electron-withdrawing fluorine atom, exhibits superior passivation but poor molecular stacking and charge extraction. In contrast, MCz-PO, featuring an electron-donating methoxy group, provides effective passivation, well-ordered molecular packing, and efficient charge extraction and transport. Consequently, PSCs using MCz-PO achieve high power conversion efficiency (PCE) of 24.74% and excellent operational stability. This study suggests that resonance structures can be an effective molecular design strategy for developing interfacial modifiers with both strong passivation capabilities and well-regulated charge dynamics.
期刊介绍:
The Journal of Energy Chemistry, the official publication of Science Press and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, serves as a platform for reporting creative research and innovative applications in energy chemistry. It mainly reports on creative researches and innovative applications of chemical conversions of fossil energy, carbon dioxide, electrochemical energy and hydrogen energy, as well as the conversions of biomass and solar energy related with chemical issues to promote academic exchanges in the field of energy chemistry and to accelerate the exploration, research and development of energy science and technologies.
This journal focuses on original research papers covering various topics within energy chemistry worldwide, including:
Optimized utilization of fossil energy
Hydrogen energy
Conversion and storage of electrochemical energy
Capture, storage, and chemical conversion of carbon dioxide
Materials and nanotechnologies for energy conversion and storage
Chemistry in biomass conversion
Chemistry in the utilization of solar energy