联苯核提高了基于醚键苝二酰亚胺的非富勒烯受体的光伏性能

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-03-18 DOI:10.1016/j.dyepig.2025.112771

Yanjie Sun , Yinuo Wang , Fengbo Sun , Ruize Zhou , Xiang Gao , Qi Zhang , Jianhong Gao , Zhitian Liu

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引用次数: 0

摘要

单溴化苝二酰亚胺（PDI）与邻苯二酚采用Williamson反应制备了一种新型的醚键非富勒烯受体（NFA），命名为NAJ-2-o，该反应无需金属催化剂。通过Suzuki反应合成了其二聚体，命名为naj -4- 0。NAJ-4-o中的联苯核扭曲了NAJ-2-o的“双层”结构，因此表现出较弱的聚集和更合适的膜形态，从而使功率转换效率（PCE）提高~ 2.5倍。PBDB-T:NAJ-4-o基共混物的PCE值为4.73%，Voc为0.92 V， Jsc为10.10 mA cm−2，FF为50.87%。本文论证了联苯核对提高PDI基nfa的光伏性能的有益作用，并提出了一种简单的合成具有最佳分子内取向的三维几何PDI分子的方法。

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Biphenyl core boosts the photovoltaic performance of ether-bonded perylene diimides based nonfullerene acceptors

One novel ether-bonded non-fullerene acceptor (NFA), named as NAJ-2-o is easily obtained through the reaction of monobrominated perylene diimides (PDI) with catechol employing the Williamson reaction, which does not require a metal catalyst. Furthermore, its dimer, named as NAJ-4-o is synthesized via Suzuki reaction. The biphenyl core in NAJ-4-o twists the “double-decker” configuration of NAJ-2-o, therefore exhibits a weaker aggregation and a more suitable film morphology, thus a ∼2.5 times higher power conversion efficiency (PCE). The PCE value of the PBDB-T:NAJ-4-o based blend was 4.73 %, with a V_oc of 0.92 V, a J_sc of 10.10 mA cm⁻², and a FF of 50.87 %. This paper demonstrates that the beneficial effects of biphenyl-core on improving the photovoltaic performance of PDI-based NFAs and presents an easy method for synthesizing 3D geometric PDI molecules with optimal intramolecular orientations.

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.