Статья

Self‐Assembled Interlayer Enables High‐Performance Organic Photovoltaics with Power Conversion Efficiency Exceeding 20%

Shitao GuanState Key Laboratory of Silicon and Advanced Semiconductor Materials International Research Center for X Polymers Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 P. R. ChinaYaokai LiInstitute of Advanced Semiconductor Research ZJU‐Hangzhou Global Scientific and Technological Innovation Center Hangzhou 310022 P. R. ChinaChang XuInterdisciplinary Center for Quantum Information and Zhejiang Province Key Laboratory of Quantum Technology and Device Department of Physics Zhejiang University Hangzhou 310027 P. R. ChinaNi YinCAS Center for Excellence in NanoscienceSuzhou Institute of Nano‐Tech and Nano‐Bionics (SINANO) Chinese Academy of Science Suzhou 215123 P. R. ChinaChenran XuInterdisciplinary Center for Quantum Information and Zhejiang Province Key Laboratory of Quantum Technology and Device Department of Physics Zhejiang University Hangzhou 310027 P. R. ChinaCongxu WangSchool of Engineering Westlake University Hangzhou 310024 P. R. ChinaMengting WangState Key Laboratory of Silicon and Advanced Semiconductor Materials International Research Center for X Polymers Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 P. R. ChinaYuxi XuSchool of Engineering Westlake University Hangzhou 310024 P. R. ChinaQi ChenCAS Center for Excellence in NanoscienceSuzhou Institute of Nano‐Tech and Nano‐Bionics (SINANO) Chinese Academy of Science Suzhou 215123 P. R. ChinaDa‐Wei WangInterdisciplinary Center for Quantum Information and Zhejiang Province Key Laboratory of Quantum Technology and Device Department of Physics Zhejiang University Hangzhou 310027 P. R. ChinaLijian ZuoInstitute of Advanced Semiconductor Research ZJU‐Hangzhou Global Scientific and Technological Innovation Center Hangzhou 310022 P. R. ChinaHongzheng ChenInstitute of Advanced Semiconductor Research ZJU‐Hangzhou Global Scientific and Technological Innovation Center Hangzhou 310022 P. R. China

2024en

ABI

Аннотация

Interfacial layers (ILs) are prerequisites to form the selective charge transport for high-performance organic photovoltaics (OPVs) but mostly result in considerable parasitic absorption loss. Trimming the ILs down to a mono-molecular level via the self-assembled monolayer is an effective strategy to mitigate parasitic absorption loss. However, such a strategy suffers from inferior electrical contact with low surface coverage on rough surfaces and poor producibility. To address these issues, here, the self-assembled interlayer (SAI) strategy is developed, which involves a thin layer of 2-6 nm to form a full coverage on the substrate via both covalent and van der Waals bonds by using a self-assembled molecule of 2-(9H-carbazol-9-yl) (2PACz). Via the facile spin coating without further rinsing and annealing process, it not only optimizes the electrical and optical properties of OPVs, which enables a world-record efficiency of 20.17% (19.79% certified) but also simplifies the tedious processing procedure. Moreover, the SAI strategy is especially useful in improving the absorbing selectivity for semi-transparent OPVs, which enables a record light utilization efficiency of 5.34%. This work provides an effective strategy of SAI to optimize the optical and electrical properties of OPVs for high-performance and solar window applications.

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Идентификаторы

DOI: 10.1002/adma.202400342

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar