13.34 % Efficiency Non-fullerene All-Small-Molecule Organic Solar Cells Enabled by Modulating the Crystallinity of Donors via a Fluorination Strategy

doi:10.1002/anie.201910297

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	13.34 % Efficiency Non-fullerene All-Small-Molecule Organic Solar Cells Enabled by Modulating the Crystallinity of Donors via a Fluorination Strategy
	Ge, Jinfeng ; Xie, Lingchao ; Peng, Ruixiang ; Fanady, Billy ; Huang, Jiaming ; Song, Wei ; Yan, Tingting ; Zhang, Wenxia ; Ge, Ziyi
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2020
卷号	59 期号:7 页码:2808-2815
关键词	ELECTRON-ACCEPTOR POLYMER PERFORMANCE MORPHOLOGY
DOI	10.1002/anie.201910297
英文摘要	Non-fullerene all-small-molecule organic solar cells (NFSM-OSCs) have shown potential as OSCs, owing to their high purity, easy synthesis and good reproducibility. However, challenges in the modulation of phase separation morphology have limited their development. Herein, two novel small molecular donors, BTEC-1F and BTEC-2F, derived from the small molecule DCAO3TBDTT, are synthesized. Using Y6 as the acceptor, devices based on non-fluorinated DCAO3TBDTT showed an open circuit voltage (V-oc) of 0.804 V and a power conversion efficiency (PCE) of 10.64 %. Mono-fluorinated BTEC-1F showed an increased V-oc of 0.870 V and a PCE of 11.33 %. The fill factor (FF) of di-fluorinated BTEC-2F-based NFSM-OSC was improved to 72.35 % resulting in a PCE of 13.34 %, which is higher than that of BTEC-1F (61.35 %) and DCAO3TBDTT (60.95 %). To our knowledge, this is the highest PCE for NFSM-OSCs. BTEC-2F had a more compact molecular stacking and a lower crystallinity which enhanced phase separation and carrier transport.
学科主题	Chemistry
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20230]
专题	2020专题
作者单位	1.Ge, ZY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Ge, ZY (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Ge, Jinfeng,Xie, Lingchao,Peng, Ruixiang,et al. 13.34 % Efficiency Non-fullerene All-Small-Molecule Organic Solar Cells Enabled by Modulating the Crystallinity of Donors via a Fluorination Strategy[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2020,59(7):2808-2815.
APA	Ge, Jinfeng.,Xie, Lingchao.,Peng, Ruixiang.,Fanady, Billy.,Huang, Jiaming.,...&Ge, Ziyi.(2020).13.34 % Efficiency Non-fullerene All-Small-Molecule Organic Solar Cells Enabled by Modulating the Crystallinity of Donors via a Fluorination Strategy.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,59(7),2808-2815.
MLA	Ge, Jinfeng,et al."13.34 % Efficiency Non-fullerene All-Small-Molecule Organic Solar Cells Enabled by Modulating the Crystallinity of Donors via a Fluorination Strategy".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 59.7(2020):2808-2815.