Enhancing the photovoltaic performance of triphenylamine based star-shaped molecules by tuning the moiety sequence of their arms in organic solar cells

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 先进有机功能材料团队

	Enhancing the photovoltaic performance of triphenylamine based star-shaped molecules by tuning the moiety sequence of their arms in organic solar cells
	Zhou, Pei 1; Dang, Dongfeng 1; Wang, Qiong 1; Duan, Xiongwei 1; Xiao, Manjun 1,2; Tao, Qiang 1; Tan, Hua 1; Yang, Renqiang2 ; Zhu, Weiguo 1
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2015
卷号	3 期号:25 页码:13568-13576
英文摘要	Isomeric star-shaped molecules of TPA(T-BT-3Cz)(3) and TPA(BT-T-3Cz)(3) with different moiety sequences in their arms based on the triphenylamine (TPA) core were designed and synthesized in order to study the influence of inserting thiophene (T) units in their arms and the effects of their positions on the photophysical and photovoltaic properties of their molecules. For comparison, parent molecules of TPA(BT-3Cz)(3) were also prepared with three arms containing 4,7-benzothiadiazole (BT) and 3-carbazolyl (3Cz) units. After the thiophene unit was inserted, the molecular planarity, absorption spectra and hole mobility improved significantly in the resulting TPA(BT-T-3Cz)(3) and TPA(T-BT-T-3Cz)(3). However, only TPA(BT- 3Cz)(3) exhibited improved photovoltaic properties in contrast to TPA(BT-3Cz)(3) in the solutionprocessable solar cells with a device structure of ITO/PEDOT: PSS/SMs:PC71BM/Ca/Al. A maximum power conversion efficiency (PCE) of up to 5.07% with a short-circuit current density (J(sc)) of 10.08 mA cm(-2), an open circuit voltage (V-oc) of 0.90 V and a fill factor (FF) of 54.05% was obtained in the TPA(BT-T-3Cz)(3)-based solar cells. To the best of our knowledge, this PCE is one of the highest PCE values for star shaped molecules with the TPA core in organic solar cells. Our work further indicates that the PCE and J(sc) values of organic solar cells with TPA-based star-shaped molecules can be increased by inserting T units and tuning the moiety sequence of their arms.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]	OPEN-CIRCUIT VOLTAGE ; POLYMERS ; ACCEPTOR ; UNIT ; COPOLYMERS ; THIOPHENE ; BACKBONE ; BENZODITHIOPHENE ; FLUORINATION ; EFFICIENCY
收录类别	SCI
语种	英语
WOS记录号	WOS:000356455200050
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/6459]
专题	青岛生物能源与过程研究所_先进有机功能材料团队
作者单位	1.Xiangtan Univ, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Dept Chem, Xiangtan 411105, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Pei,Dang, Dongfeng,Wang, Qiong,et al. Enhancing the photovoltaic performance of triphenylamine based star-shaped molecules by tuning the moiety sequence of their arms in organic solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(25):13568-13576.
APA	Zhou, Pei.,Dang, Dongfeng.,Wang, Qiong.,Duan, Xiongwei.,Xiao, Manjun.,...&Zhu, Weiguo.(2015).Enhancing the photovoltaic performance of triphenylamine based star-shaped molecules by tuning the moiety sequence of their arms in organic solar cells.JOURNAL OF MATERIALS CHEMISTRY A,3(25),13568-13576.
MLA	Zhou, Pei,et al."Enhancing the photovoltaic performance of triphenylamine based star-shaped molecules by tuning the moiety sequence of their arms in organic solar cells".JOURNAL OF MATERIALS CHEMISTRY A 3.25(2015):13568-13576.