Donor Derivative Incorporation: An Effective Strategy toward High Performance All-Small-Molecule Ternary Organic Solar Cells

doi:10.1002/advs.201901613

	Donor Derivative Incorporation: An Effective Strategy toward High Performance All-Small-Molecule Ternary Organic Solar Cells
	Tang, Hua 2,3,4; Xu, Tongle 2,3; Yan, Cenqi 4; Gao, Jie 2; Yin, Hang 4; Lv, Jie 2,3; Singh, Ranbir 1; Kumar, Manish 5; Duan, Tainan 2; Kan, Zhipeng 2
刊名	ADVANCED SCIENCE
	2019-11-01
卷号	6 期号:21 页码:8
关键词	morphology organic solar cells small molecules structural similarity thick films
DOI	10.1002/advs.201901613
通讯作者	Kan, Zhipeng(kanzhipeng@cigit.ac.cn) ; Lu, Shirong(lushirong@cigit.ac.cn) ; Li, Gang(gang.w.li@polyu.edu.hk)
英文摘要	Thick-film all-small-molecule (ASM) organic solar cells (OSCs) are preferred for large-scale fabrication with printing techniques due to the distinct advantages of monodispersion, easy purification, and negligible batch-to-batch variation. However, ASM OSCs are typically constrained by the morphology aspect to achieve high efficiency and maintain thick film simultaneously. Specifically, synchronously manipulating crystallinity, domain size, and phase segregation to a suitable level are extremely challenging. Herein, a derivative of benzodithiophene terthiophene rhodanine (BTR) (a successful small molecule donor for thick-film OSCs), namely, BTR-OH, is synthesized with similar chemical structure and absorption but less crystallinity relative to BTR, and is employed as a third component to construct BTR:BTR-OH:PC71BM ternary devices. The power conversion efficiency (PCE) of 10.14% and fill factor (FF) of 74.2% are successfully obtained in approximate to 300 nm OSC, which outperforms BTR:PC71BM (9.05% and 69.6%) and BTR-OH:PC71BM (8.00% and 65.3%) counterparts, and stands among the top values for thick-film ASM OSCs. The performance enhancement results from the enhanced absorption, suppressed bimolecular/trap-assisted recombination, improved charge extraction, optimized domain size, and suitable crystallinity. These findings demonstrate that the donor derivative featuring similar chemical structure but different crystallinity provides a promising third component guideline for high-performance ternary ASM OSCs.
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000496253700024
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/10291]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Kan, Zhipeng; Lu, Shirong; Li, Gang
作者单位	1.Dongguk Univ, Dept Energy & Mat Engn, Seoul 04620, South Korea 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Hong Kong Polytech Univ, Dept Elect & Informat Engn, Hong Hum, Kowloon, Hong Kong, Peoples R China 5.Pohang Univ Sci & Technol, Pohang Accelerator Lab, Pohang 37673, South Korea
推荐引用方式 GB/T 7714	Tang, Hua,Xu, Tongle,Yan, Cenqi,et al. Donor Derivative Incorporation: An Effective Strategy toward High Performance All-Small-Molecule Ternary Organic Solar Cells[J]. ADVANCED SCIENCE,2019,6(21):8.
APA	Tang, Hua.,Xu, Tongle.,Yan, Cenqi.,Gao, Jie.,Yin, Hang.,...&Li, Gang.(2019).Donor Derivative Incorporation: An Effective Strategy toward High Performance All-Small-Molecule Ternary Organic Solar Cells.ADVANCED SCIENCE,6(21),8.
MLA	Tang, Hua,et al."Donor Derivative Incorporation: An Effective Strategy toward High Performance All-Small-Molecule Ternary Organic Solar Cells".ADVANCED SCIENCE 6.21(2019):8.