Efficient soluble PTCBI-type non-fullerene acceptor materials for organic solar cells.

IF 4.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Frontiers of Optoelectronics Pub Date : 2023-04-23 DOI:10.1007/s12200-023-00063-6

Xiang Gao, Fengbo Sun, Xinzhu Tong, Xufan Zheng, Yinuo Wang, Cong Xiao, Pengcheng Li, Renqiang Yang, Xunchang Wang, Zhitian Liu

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Abstract

Single perylene diimide (PDI) used as a non-fullerene acceptor (NFA) in organic solar cells (OSCs) is enticing because of its low cost and excellent stability. To improve the photovoltaic performance, it is vital to narrow the bandgap and regulate the stacking behavior. To address this challenge, we synthesize soluble perylenetetracarboxylic bisbenzimidazole (PTCBI) molecules with a bulky side chain at the bay region, by replacing the widely used "swallow tail" type alkyl chains at the imide position of PDI molecules with a planar benzimidazole structure. Compared with PDI molecules, PTCBI molecules exhibit red-shifted UV-vis absorption spectra with larger extinction coefficient, and one magnitude higher electron mobility. Finally, OSCs based on one soluble PTCBI-type NFA, namely MAS-7, exhibit a champion power conversion efficiency (PCE) of 4.34%, which is significantly higher than that of the corresponding PDI-based OSCs and is the highest PCE of PTCBI-based OSCs reported. These results highlight the potential of soluble PTCBI derivatives as NFAs in OSCs.

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有机太阳能电池用高效可溶性ptcbi型非富勒烯受体材料。

在有机太阳能电池(OSCs)中，单苝二酰亚胺(PDI)作为非富勒烯受体(NFA)具有低廉的成本和优异的稳定性。为了提高光电性能，缩小带隙和调节堆叠行为是至关重要的。为了解决这一问题，我们用一个平面苯并咪唑结构取代PDI分子亚胺位置广泛使用的“燕尾”型烷基链，合成了在海湾区具有大侧链的可溶性苝四羧基双苯并咪唑(PTCBI)分子。与PDI分子相比，PTCBI分子的紫外-可见吸收光谱红移，消光系数大，电子迁移率高一个数量级。最后，基于一种可溶ptcbi型NFA (MAS-7)的OSCs表现出4.34%的冠军功率转换效率(PCE)，显著高于相应的pdi型OSCs，是目前报道的ptcbi型OSCs中最高的PCE。这些结果突出了可溶性PTCBI衍生物在OSCs中作为NFAs的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers of Optoelectronics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

7.80

自引率

0.00%

发文量

583

期刊介绍： Frontiers of Optoelectronics seeks to provide a multidisciplinary forum for a broad mix of peer-reviewed academic papers in order to promote rapid communication and exchange between researchers in China and abroad. It introduces and reflects significant achievements being made in the field of photonics or optoelectronics. The topics include, but are not limited to, semiconductor optoelectronics, nano-photonics, information photonics, energy photonics, ultrafast photonics, biomedical photonics, nonlinear photonics, fiber optics, laser and terahertz technology and intelligent photonics. The journal publishes reviews, research articles, letters, comments, special issues and so on. Frontiers of Optoelectronics especially encourages papers from new emerging and multidisciplinary areas, papers reflecting the international trends of research and development, and on special topics reporting progress made in the field of optoelectronics. All published papers will reflect the original thoughts of researchers and practitioners on basic theories, design and new technology in optoelectronics. Frontiers of Optoelectronics is strictly peer-reviewed and only accepts original submissions in English. It is a fully OA journal and the APCs are covered by Higher Education Press and Huazhong University of Science and Technology. ● Presents the latest developments in optoelectronics and optics ● Emphasizes the latest developments of new optoelectronic materials, devices, systems and applications ● Covers industrial photonics, information photonics, biomedical photonics, energy photonics, laser and terahertz technology, and more

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