Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells | |
Gao, Chen1,2; Qiao, Zi1; Shi, Keli1,3; Chen, Song1; Li, Yongfang3; Yu, Gui3; Li, Xiaoyu1; Wang, Haiqiao1,2 | |
刊名 | ORGANIC ELECTRONICS |
2016-11-01 | |
卷号 | 38页码:245-255 |
关键词 | Hexa-peri-hexabenzocoronene D-A conjugated copolymers Polymer solar cells Organic field effect transistor |
英文摘要 | Hexa-peri-hexabenzocoronene (HBC) is a disc-shaped conjugated molecule with strong pi-pi stacking property, high intrinsic charge mobility and good self-assembly property. But for a long time, the organic photovoltaic (OPV) solar cells based on HBC small organic molecules demonstrated low power conversion efficiencies (PCEs). In this study, a series of polymers named as PHBCDPPC20, PHBCDPPC8, PHBCDPPF and PHBCDPPDT were designed and synthesized through copolymerization of HBC with bulky mesityl substituents and strong electron-withdrawing diketopyrrolopyrrole (DPP) with different alkyl side chains and various pi-bridges. Introduction of DPP unit into the HBC derivatives broadened the absorption spectra and lowered the band gaps. Bulky mesityl substituents attached to periphery of HBC prevented polymers from self-aggregating into too large domain size in the blend films of photovoltaic devices. The different pi-bridges have significant effect on the structure conformation of the polymers. The polymer PHBCDPPDT with bithiophene pi-bridges demonstrated the broadest absorption for its extensive pi-conjugation and more coplanar conformation compared with the thiophene pi-bridge one. PHBCDPPC20, PHBCDPPC8, PHBCDPPF and PHBCDPPDT gave field-effect hole mobilities of 1.35 x 10(-3), 2.31 x 10(-4), 2.79 x 10(-4) and 8.60 x 10(-3) cm(2) V-1 s(-1), respectively. The solar cells based on these polymers displayed PCEs of 2.12%, 2.85%, 1.89% and 2.74%. To our knowledge, 2.85% is the highest PCE for the HBC-based photovoltaic materials till now. (C) 2016 Published by Elsevier B.V. |
收录类别 | SCI |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.iccas.ac.cn/handle/121111/35503] |
专题 | 化学研究所_有机固体实验室 |
作者单位 | 1.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composite, Beijing 100029, Peoples R China 2.Beijing Univ Chem Technol, Key Lab Carbon Fiber & Funct Polymers, Minist Educ, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Gao, Chen,Qiao, Zi,Shi, Keli,et al. Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells[J]. ORGANIC ELECTRONICS,2016,38:245-255. |
APA | Gao, Chen.,Qiao, Zi.,Shi, Keli.,Chen, Song.,Li, Yongfang.,...&Wang, Haiqiao.(2016).Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells.ORGANIC ELECTRONICS,38,245-255. |
MLA | Gao, Chen,et al."Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells".ORGANIC ELECTRONICS 38(2016):245-255. |
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