15.34% efficiency all-small-molecule organic solar cells with an improved fill factor enabled by a fullerene additive

doi:10.1039/d0ee00714e

	15.34% efficiency all-small-molecule organic solar cells with an improved fill factor enabled by a fullerene additive
	Hu, Dingqin 1; Yang, Qianguang 1; Chen, Haiyan 1; Wobben, Friso 2; Le Corre, Vincent M.2; Singh, Ranbir 3; Liu, Tao 4,5; Ma, Ruijie 4,5; Tang, Hua 1; Koster, L. Jan Anton 2
刊名	ENERGY & ENVIRONMENTAL SCIENCE
	2020-07-01
卷号	13 期号:7 页码:2134-2141
ISSN号	1754-5692
DOI	10.1039/d0ee00714e
通讯作者	Kan, Zhipeng(kanzhipeng@cigit.ac.cn) ; Xiao, Zeyun(xiao.z@cigit.ac.cn) ; Lu, Shirong(lushirong@cigit.ac.cn)
英文摘要	Solution processed organic solar cells (OSCs) composed of all small molecules (ASM) are promising for production on an industrial scale owing to the properties of small molecules, such as well-defined chemical structures, high purity of materials, and outstanding repeatability from batch to batch synthesis. Remarkably, ASM OSCs with power conversion efficiency (PCE) beyond 13% were achieved by structure improvement of the electron donor and choosingY6as the electron acceptor. However, the fill factor (FF) is an obstacle that limits the further improvement of the PCE for these ASM OSCs. Herein, we focus on the FF improvement of recently reported ASM OSCs withBTR-Cl:Y6as the active layer by miscibility-induced active layer morphology optimization. The incorporation of fullerene derivatives, which have good miscibility with bothBTR-ClandY6, results in reduced bimolecular recombination and thus improved FF. In particular, whenca.5 wt% ofPC(71)BMwas added in the active layer, a FF of 77.11% was achieved without sacrificing the open circuit voltage (V-OC) and the short circuit current density (J(SC)), leading to a record PCE of 15.34% (certified at 14.7%) for ASM OSCs. We found that the optimized device showed comparable charge extraction, longer charge carrier lifetime, and slower bimolecular recombination rate compared with those of the control devices (w/o fullerene). Our results demonstrate that the miscibility driven regulation of active layer morphology by incorporation of a fullerene derivative delicately optimizes the active layer microstructures and improves the device performance, which brings vibrancy to OSC research.
资助项目	National Youth Thousand Program Project[R52A199Z11] ; artificial intelligence key project of Chongqing[cstc2017rgzn-zdyfX0030] ; CAS Pioneer Hundred Talents Program[Y82A060Q10] ; CAS Pioneer Hundred Talents Program[Y92A160Q10] ; CAS Pioneer Hundred Talents Program[E0296102] ; National Natural Science Foundation of China[21801238] ; National Natural Science Foundation of China[61805245] ; CAS Pioneer Hundred Talents Program B[Y92A010Q10] ; Natural Science Foundation of Chongqing[cstc2019jcyj-msxmX0400] ; Natural Science Foundation of Chongqing[cstc2018jcyjAX0556] ; Venture & Innovation Support Program for Chongqing Overseas Returnees[cx2019028] ; Chongqing Talents Top Youth Talent Program[CQYC201905057] ; STW/NWO (VIDI)[13476] ; project of Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000549074800013
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/11361]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Kan, Zhipeng; Xiao, Zeyun; Lu, Shirong
作者单位	1.Chinese Acad Sci, Univ Chinese Acad Sci UCAS Chongqing, Chongqing Sch, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Univ Groningen, Zernike Inst Adv Mat, Nijenborgh 4, NL-9747 AG Groningen, Netherlands 3.Dongguk Univ, Dept Energy & Mat Engn, Seoul 100715, South Korea 4.Hong Kong Univ Sci & Technol HKUST, Dept Chem, Kowloon, Clear Water Bay, Hong Kong, Peoples R China 5.Hong Kong Univ Sci & Technol HKUST, Hong Kong Branch, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Hu, Dingqin,Yang, Qianguang,Chen, Haiyan,et al. 15.34% efficiency all-small-molecule organic solar cells with an improved fill factor enabled by a fullerene additive[J]. ENERGY & ENVIRONMENTAL SCIENCE,2020,13(7):2134-2141.
APA	Hu, Dingqin.,Yang, Qianguang.,Chen, Haiyan.,Wobben, Friso.,Le Corre, Vincent M..,...&Lu, Shirong.(2020).15.34% efficiency all-small-molecule organic solar cells with an improved fill factor enabled by a fullerene additive.ENERGY & ENVIRONMENTAL SCIENCE,13(7),2134-2141.
MLA	Hu, Dingqin,et al."15.34% efficiency all-small-molecule organic solar cells with an improved fill factor enabled by a fullerene additive".ENERGY & ENVIRONMENTAL SCIENCE 13.7(2020):2134-2141.