Effects of Alkoxy and Fluorine Atom Substitution of Donor Molecules on the Morphology and Photovoltaic Performance of All Small Molecule Organic Solar Cells

doi:10.3389/fchem.2018.00413

CORC > 化学研究所 > 中国科学院化学研究所

	Effects of Alkoxy and Fluorine Atom Substitution of Donor Molecules on the Morphology and Photovoltaic Performance of All Small Molecule Organic Solar Cells
	Qiu, Beibei 1,2; Chen, Shanshan 3; Xue, Lingwei 1; Sun, Chenkai 1,2; Li, Xiaojun 1,2; Zhang, Zhi-Guo 1; Yang, Changduk 3; Li, Yongfang 1,2,4
刊名	FRONTIERS IN CHEMISTRY
	2018-09-13
卷号	6
关键词	Benzothiadiazole Organic Small Molecule Donors Fluorine Substitution Alkoxy Side Chain All smAll Molecule Organic Solar Cells
ISSN号	2296-2646
DOI	10.3389/fchem.2018.00413
英文摘要	Two benzothiadiazole (BT)-based small-molecule donors, SM-BT-2OR with alkoxy side chain and SM-BT-2F with fluorine atom substitution, were designed and synthesized for investigating the effect of the substituents on the photovoltaic performance of the donor molecules in all smallmolecule organic solar cells (SM-OSCs). Compared to SM-BT-2OR, the film of SM-BT-2F exhibited red-shifted absorption and deeper HOMO level of -5.36 eV. When blending with n-type organic semiconductor (n-OS) acceptor IDIC, the as-cast devices displayed similar PCE values of 2.33 and 2.76% for the SM-BT-2OR and SM-BT-2F-based devices, respectively. The SM-BT-2OR-based devices with thermal annealing (TA) at 120 degrees C for 10 min showed optimized PCE of 7.20%, however, the SM-BT-2F-based device displayed lower PCE after the TA treatment, which should be ascribed to the undesirable morphology and molecular orientation. Our results reveal that for the SM-OSCs, the substituent groups of small molecule donors have great impact on the film morphology, as well as the photovoltaic performance.
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000444412700001
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/42977]
专题	中国科学院化学研究所
通讯作者	Li, Yongfang
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, CAS Key Lab Organ Solids, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Sci, Beijing, Peoples R China 3.Ulsan Natl Inst Sci & Technol, Sch Energy & Chem Engn, Low Dimens Carbon Mat Ctr, Dept Energy Engn, Ulsan, South Korea 4.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Beibei,Chen, Shanshan,Xue, Lingwei,et al. Effects of Alkoxy and Fluorine Atom Substitution of Donor Molecules on the Morphology and Photovoltaic Performance of All Small Molecule Organic Solar Cells[J]. FRONTIERS IN CHEMISTRY,2018,6.
APA	Qiu, Beibei.,Chen, Shanshan.,Xue, Lingwei.,Sun, Chenkai.,Li, Xiaojun.,...&Li, Yongfang.(2018).Effects of Alkoxy and Fluorine Atom Substitution of Donor Molecules on the Morphology and Photovoltaic Performance of All Small Molecule Organic Solar Cells.FRONTIERS IN CHEMISTRY,6.
MLA	Qiu, Beibei,et al."Effects of Alkoxy and Fluorine Atom Substitution of Donor Molecules on the Morphology and Photovoltaic Performance of All Small Molecule Organic Solar Cells".FRONTIERS IN CHEMISTRY 6(2018).