Morphology Controlling of All-Small-Molecule Organic Solar Cells: From Donor Material Design to Device Engineering

被引：15
作者：
Sun, Xiaokang [1 ,2 ]
Lv, Jie [2 ]
Zhang, Chenyang [2 ,3 ]
Wang, Kai [3 ]
Yang, Chunming [4 ]
Hu, Hanlin [2 ]
Ouyang, Xiaoping [1 ]
机构：
[1] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Peoples R China
[2] Shenzhen Polytech, Hoffman Inst Adv Mat, Shenzhen 518000, Peoples R China
[3] Northwestern Polytech Univ, Res & Dev Inst Northwestern Polytech Univ, Inst Flexible Elect IFE, Xian 710072, Peoples R China
[4] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
来源：
SOLAR RRL | 2023年 / 7卷 / 16期
基金：
中国国家自然科学基金;
关键词：
all-small-molecule organic solar cells; device engineering; material design; morphology controlling; EFFICIENCY; TERNARY; PERFORMANCES; MODULATION; ADDITIVES; ACCEPTORS; CHAIN;
D O I：
10.1002/solr.202300332
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Compared to polymer-based organic solar cells, all-small-molecule organic solar cells (ASM-OSCs) have garnered significant attention due to their well-defined chemical structures, lower batch-to-batch variation, straightforward synthesis and purification procedures, and easy to modulate properties. Recent developments in small molecule donors have enabled ASM-OSCs to achieve power conversion efficiencies in excess of 17%, gradually approaching those of polymer-based devices, and demonstrating considerable potential for commercialization. However, structural and morphological features in the all-small-molecule blend films, including crystallization behavior, phase separation, and molecular arrangement, play a crucial role in the photoelectric performance. This review systematically introduces and discusses recent advancements in ASM-OSCs in terms of design strategies for novel small molecule donors and device engineering. Additionally, the correlation between active layer morphology and structure and device performance is analyzed. Finally, the challenges and prospects of ASM-OSCs are discussed.
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页数：18
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