带隙为1.48 eV的层状有机太阳能电池的级联能量和电荷转移协同提高18.7%的效率

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-01-02 DOI:10.1002/aenm.202404718

Lu Zhang, Hang Zhou, Yongchao Xie, Wenjing Xu, Hongyue Tian, Xingchao Zhao, Yuheng Ni, Sang Young Jeong, Ye Zou, Xixiang Zhu, Xiaoling Ma, Han Young Woo, Fujun Zhang

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引用次数: 0

摘要

采用自旋涂覆给体层和受体层的方法，构建了一层一层的有机太阳能电池。以PBQx-TCl/ITIC/PY-DT为有源层的losc的功率转换效率（PCE）达到了18.79%，这应该是光带隙超过1.48 eV的losc中的最高值之一。中间带隙材料ITIC与PBQx-TCl和PY-DT具有互补的光子收获范围，从而增强了有源层的光子收获。同时，ITIC可以在能量和电荷传递中发挥重要作用，增加激子利用和电荷传输，这可以从ITIC/PY-DT或PY-DT/ITIC作为受体层的正常或倒置losc的不同FFs中得到证实。采用ITIC作为中间层，在活性层中形成级联的能量和电荷传递，可使losc的PCE提高7%以上。这项工作可能为提高LOSCs的性能提供一种有效的策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Cascaded Energy and Charge Transfer Synergistically Prompting 18.7% Efficiency of Layered Organic Solar Cells with 1.48 eV Bandgap

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Cascaded Energy and Charge Transfer Synergistically Prompting 18.7% Efficiency of Layered Organic Solar Cells with 1.48 eV Bandgap

Series of layer-by-layer organic solar cells (LOSCs) are constructed by sequentially spin-coating donor layer and acceptor layers. A champion power conversion efficiency (PCE) of 18.79% is achieved from the LOSCs with PBQx-TCl/ITIC/PY-DT as active layers, which should be one of the top values among the OSCs with optical bandgap over 1.48 eV. The middle bandgap material ITIC has a complementary photon harvesting range with PBQx-TCl and PY-DT, leading to the enhanced photon harvesting of active layers. Meanwhile, ITIC can play a vital role in energy and charge transfer relay to increase exciton utilization and charge transport, which can be confirmed from the varied FFs of normal or inverted LOSCs with ITIC/PY-DT or PY-DT/ITIC as acceptor layers. Over 7% PCE improvement of LOSCs can be achieved by employing ITIC as the middle layer to form cascaded energy and charge transfer in the active layers. This work may provide an efficient strategy for improving the performance of LOSCs.

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.