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15.8% efficiency binary all-small-molecule organic solar cells enabled by a selenophene substituted sematic liquid crystalline donor

文献类型：期刊论文

作者Xu, Tongle2,3; Lv, Jie2,3; Yang, Ke2; He, Ya1; Yang, Qianguang2,3; Chen, Haiyan2; Chen, Qianqian2,3; Liao, Zhihui2,3; Kan, Zhipeng2; Duan, Tainan2
刊名ENERGY & ENVIRONMENTAL SCIENCE
出版日期2021-08-04
页码11
ISSN号1754-5692
DOI10.1039/d1ee01193f
通讯作者Lu, Shirong(lushirong@cigit.ac.cn)
英文摘要Selenophene substitution of photovoltaics materials can improve their intermolecular interactions and thus offer a good opportunity to finely optimize their phase separation morphology to an ideal state. However, the performance of this substitution strategy is yet unclear in liquid crystalline donors, which have demonstrated high efficiency. The combination of those structural advantages may help to achieve state-of-the-art device performance. Herein, two new liquid crystalline small molecule donors are designed and synthesized with different substituents on benzo[1,2-b:4,5-b']dithiophene (BDT) central units, including L1 with thiophene group and L2 with selenophene group, for investigating the effect of selenophene substitution on morphology and photovoltaic performance of liquid crystalline donors. Unlike the control donor L1, the selenide donor L2 shows a higher intramolecular interaction and presents a novel sematic liquid crystal phase, which results in a more favored morphology, better light harvest, and lower charge recombination. As a result, outstanding power conversion efficiency up to 15.8% is realized in the L2:Y6 based devices. Particularly promising is the fact that selenide-based devices with active layer thicknesses up to similar to 300 nm can still output a high PCE of 14.3%, which is promising for roll-to-roll printing processes with large-scale production. To our best knowledge, the PCEs of 15.8% and 14.3% are the highest values reported to date in binary ASM-OSCs and thick-film ASM-OSCs, respectively. These excellent values demonstrated the superiority of selenophene in the construction of efficient small molecule liquid crystalline donors.
资助项目National Youth Thousand Program Project[R52A199Z11] ; Chongqing Funds for Distinguished Young Scientists[cstc2020jcyj-jqX0018] ; CAS Pioneer Hundred Talents Program[Y82A060Q10] ; CAS Pioneer Hundred Talents Program[Y92A160Q10] ; CAS Pioneer Hundred Talents Program[E0296102] ; National Natural Science Foundation of China[62074022] ; National Natural Science Foundation of China[61805245] ; National Natural Science Foundation of China[62074149] ; Natural Science Foundation of Chongqing[cstc2019jcyj-msxmX0400]
WOS研究方向Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000686698700001
出版者ROYAL SOC CHEMISTRY
源URL[http://119.78.100.138/handle/2HOD01W0/13915]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Lu, Shirong
作者单位1.Natl Univ Singapore, Dept Mat Sci & Engn, 7 Engn Dr 1, Singapore 117574, Singapore
2.Chinese Acad Sci, Univ Chinese Acad Sci UCAS Chongqing, Chongqing Sch, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chongqing Univ, Sch Energy & Power Engn, MOE Key Lab Low Grade Energy Utilizat Technol & S, CQU NUS Renewable Energy Mat & Devices Joint Lab, Chongqing 400044, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Tongle,Lv, Jie,Yang, Ke,et al. 15.8% efficiency binary all-small-molecule organic solar cells enabled by a selenophene substituted sematic liquid crystalline donor[J]. ENERGY & ENVIRONMENTAL SCIENCE,2021:11.
APA Xu, Tongle.,Lv, Jie.,Yang, Ke.,He, Ya.,Yang, Qianguang.,...&Lu, Shirong.(2021).15.8% efficiency binary all-small-molecule organic solar cells enabled by a selenophene substituted sematic liquid crystalline donor.ENERGY & ENVIRONMENTAL SCIENCE,11.
MLA Xu, Tongle,et al."15.8% efficiency binary all-small-molecule organic solar cells enabled by a selenophene substituted sematic liquid crystalline donor".ENERGY & ENVIRONMENTAL SCIENCE (2021):11.

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来源：重庆绿色智能技术研究院

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