Organic Electronic Devices
- Nan Zhang
Nan Zhang
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Center of Super-Diamond and Advanced Films, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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- Yidan An
Yidan An
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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- Qin Yao
Qin Yao
School of Additive Manufacturing, Zhejiang Polytechnic University of Mechanical and Electrical Engineering, Hangzhou, Zhejiang 310059, P. R. China
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- Guangruixing Zou
Guangruixing Zou
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Center of Super-Diamond and Advanced Films, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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- Ning Zhou
Ning Zhou
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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- Ye Wu
Ye Wu
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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- Desui Chen
Desui Chen
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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Francis R. Lin
Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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- Alex K.-Y. Jen
Alex K.-Y. Jen
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Center of Super-Diamond and Advanced Films, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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- Hin-Lap Yip*
Hin-Lap Yip
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Center of Super-Diamond and Advanced Films, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
School of Energy and Environmental Science, City University of Hong Kong, Kowloon, Hong Kong 999077, China
State Key Laboratory for Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong 999077, China
*Email: [emailprotected]
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ACS Applied Materials & Interfaces
Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX
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https://pubs.acs.org/doi/10.1021/acsami.5c03878
Published April 24, 2025
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The PEDOT:PSS has been utilized extensively as a hole transport layer (HTL) in organic solar cells (OSCs) due to its excellent compatibility with various bulk heterojunction (BHJ) active layers. However, its intrinsically low electrical conductivity and suboptimal surface morphology limit hole extraction, ultimately constraining the performance of OSCs. To address this, we constructed an advanced heterojunction interface by introducing a wide-bandgap perovskite (CsPbBr3) interlayer between the PEDOT:PSS and BHJ. The textured CsPbBr3 interlayer serves as an efficient hole transport modifier by enhancing extraction and transport efficiency, while simultaneously functioning as an energy donor via Förster resonance energy transfer (FRET) and as a photosensitizer capable of generating photocarriers independently through its intrinsic optoelectronic properties. This synergetic enhancement of charge generation, extraction, and transport properties resulted in an increase in the power conversion efficiency (PCE) of PM6:Y6-based OSCs from 16.80% to 17.74%, along with improved photocurrent and fill factor (FF). The universality of this approach was further demonstrated in state-of-the-art PM6:BTP-eC9:L8-BO systems, achieving a PCE of 19.02%. Our work elucidates the multifunctional role of CsPbBr3 in managing interfacial properties, presenting a feasible interface engineering strategy to achieve high-performance OSCs.
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- Carrier dynamics
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ACS Applied Materials & Interfaces
Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX
Click to copy citationCitation copied!
Published April 24, 2025
Publication History
Received
Accepted
Revised
Published
online
© 2025 American Chemical Society
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