NDLI: D–A–Ar-type small molecules with enlarged π-system of phenanthrene at terminal for high-performance solution processed organic solar cells

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D–A–Ar-type small molecules with enlarged π-system of phenanthrene at terminal for high-performance solution processed organic solar cells

Content Provider	Semantic Scholar
Author	Zhang, Youming Xiao, Manjun Bao, Xichang Tao, Qiang Wang, Yafei Yang, Renqiang Zhu, Weiguo
Copyright Year	2014
Abstract	Two novel D-A-Ar-type small molecules of TPA-DPP-P and TPA(DPP-P)(2) were synthesized and characterized, in which triphenylamine (TPA), diketopyrrolopyrrole (DPP) and phenanthrene (P) were used as the donor (D) core, acceptor (A) arm, and enlarged pi-system of polycyclic arene (Ar) terminal. Their absorptive, electro-chemical, thermal, and photovoltaic properties were preliminary investigated. Significantly improved photo-physical and photovoltaic performances were observed for both small molecules containing the planar P terminal in comparison with those for their parent D-A-type molecule of TPA-DPP. The highest power conversion efficiency (PCE) of 3.42% and a maximum short-circuit current density (J(sc)) of 9.2 mA/cm(2) were obtained in the solution-processed TPA(DPP-P)(2)-based solar cells using [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) as acceptor. The PCE and Jsc values are 8.76 and 4.97 times higher than those of the TPA-DPP-based cells, respectively. It indicates that appending the enlarged p-system of the planar P terminal and incorporating the DPP-P arm into D-A-type small molecule are efficient approaches to improve photo-physical and photovoltaic performances for its resulting molecules. (C) 2014 Elsevier B. V. All rights reserved.
Starting Page	1173
Ending Page	1183
Page Count	11
File Format	PDF HTM / HTML
DOI	10.1016/j.orgel.2014.03.011
Alternate Webpage(s)	http://ir.qibebt.ac.cn/bitstream/337004/6300/1/D-A-Ar-type%20small%20molecules%20with%20enlarged%20p-system%20of%20phenanthrene%20at%20terminal%20for%20high-performance%20solution%20processed%20organic%20solar%20cells.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.orgel.2014.03.011
Volume Number	15
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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