Delicate Morphology Control Triggers 14.7% Efficiency All-Small-Molecule Organic Solar Cells

doi:10.1002/aenm.202001076

	Delicate Morphology Control Triggers 14.7% Efficiency All-Small-Molecule Organic Solar Cells
	Tang, Hua 1,4,5; Chen, Haiyan 1; Yan, Cenqi 5; Huang, Jiaming 5; Fong, Patrick W. K.5; Lv, Jie 1,4; Hu, Dingqin 1; Singh, Ranbir 2; Kumar, Manish 3; Xiao, Zeyun 1
刊名	ADVANCED ENERGY MATERIALS
	2020-06-05
页码	9
关键词	all-small-molecule high-performance morphology control organic solar cells
ISSN号	1614-6832
DOI	10.1002/aenm.202001076
通讯作者	Yan, Cenqi(cenqi.cq.yan@polyu.edu.hk) ; Lu, Shirong(lushirong@cigit.ac.cn) ; Li, Gang(gang.w.li@polyu.edu.hk)
英文摘要	Morphology is a critical factor to determine the photovoltaic performance of organic solar cells (OSCs). However, delicately fine-tuning the morphology involving only small molecules is an extremely challenging task. Herein, a simple, generic, and effective concentration-induced morphology manipulation approach is demonstrated to prompt both the state-of-the-art thin-film BTR-Cl:Y6 and thick-film BTR:PC71BM all-small-molecule (ASM) OSCs to a record level. The morphology is delicately controlled by subtly altering the prepared solution concentration but maintaining the identical active layer thickness. The remarkable performance enhancement achieved by this approach mainly results from the enhanced absorption, reduced trap-assistant recombination, increased crystallinity, and optimized phase-separated network. These findings demonstrate that a concentration-induced morphology manipulation strategy can further propel the reported best-performing ASM OSCs to a brand-new level, and provide a promising way to delicately control the morphology towards high-performance ASM OSCs.
资助项目	National Youth Thousand Program Project[R52A199Z11] ; National Special Funds for Repairing, and Purchasing Scientific Institutions[Y72Z090Q10] ; Artificial Intelligence Key Project of Chongqing[cstc2017rgzn-zdyfX0030] ; Research Grants Council of Hong Kong[15218517] ; Research Grants Council of Hong Kong[C5037-18G] ; Shenzhen Science and Technology Innovation Commission[JCYJ20170413154602102] ; funding for Project of Strategic Importance[1-ZE29] ; Sir Sze-yuen Chung Endowed Professorship, and Postdoctoral Fellowships Scheme (PDFS) by the Hong Kong Polytechnic University[YW3Y] ; Natural Science Foundation of Chongqing[cstc2019jcyjmsxmX0400] ; Youth Innovation Promotion Association Chinese Academy of Sciences[2020379]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000537761300001
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/11190]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Yan, Cenqi; Lu, Shirong; Li, Gang
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Organ Semicond Res Ctr, Chongqing 400714, Peoples R China 2.Dongguk Univ, Dept Energy & Mat Engn, Seoul 04620, South Korea 3.Pohang Univ Sci & Technol, Pohang Accelerator Lab, Pohang 37673, South Korea 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Hong Kong Polytech Univ, Dept Elect & Informat Engn, Hung Hum, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Tang, Hua,Chen, Haiyan,Yan, Cenqi,et al. Delicate Morphology Control Triggers 14.7% Efficiency All-Small-Molecule Organic Solar Cells[J]. ADVANCED ENERGY MATERIALS,2020:9.
APA	Tang, Hua.,Chen, Haiyan.,Yan, Cenqi.,Huang, Jiaming.,Fong, Patrick W. K..,...&Li, Gang.(2020).Delicate Morphology Control Triggers 14.7% Efficiency All-Small-Molecule Organic Solar Cells.ADVANCED ENERGY MATERIALS,9.
MLA	Tang, Hua,et al."Delicate Morphology Control Triggers 14.7% Efficiency All-Small-Molecule Organic Solar Cells".ADVANCED ENERGY MATERIALS (2020):9.