Solution-processable star-shaped photovoltaic organic molecule with triphenylamine core and thieno[3,2-b]thiophene-dicyanovinyl arms

被引：34

作者：

Deng, Dan ^{[1
,2
]}

Shen, Suling ^{[1
,2
]}

Zhang, Jing ^{[1
]}

He, Chang ^{[1
]}

Zhang, Zhanjun ^{[2
]}

Li, Yongfang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

ORGANIC ELECTRONICS | 2012年 / 13卷 / 11期

关键词：

Organic solar cells; Conjugated organic molecules; Organic semiconductors; Solution processability; Organic photovoltaic materials; POLYMER SOLAR-CELLS; FIELD-EFFECT TRANSISTORS; OPEN-CIRCUIT VOLTAGE; EFFICIENCY; OLIGOTHIOPHENE; ACCEPTOR; DESIGN; LAYER; GAP;

D O I：

10.1016/j.orgel.2012.07.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new solution-processable star-shaped D-pi-A molecule with triphenylamine (TPA) as core and donor unit, dicyanovinyl (DCN) as end group and acceptor unit, and 3,6-dihexyl-thieno[3,2-b]thiophene (DHT) as pi bridge, S(TPA-DHT-DCN) was synthesized for the application as donor material in solution-processed bulk-heterojunction organic solar cells (OSCs). The compound exhibits broad absorption in the visible region with suitable energy levels, which are desirable for application as a donor material in organic solar cells. The OSC devices based on S(TPA-DHT-DCN) as the donor and PC71BM as the acceptor (1:2, w/w) exhibited power conversion efficiency (PCE) of 2.87%, with high open circuit voltage (V-oc) of 0.96 V. short circuit current density (J(sc)) of 6.80 mA/cm(2), and fill factor (FF) of 43.5%, under the illumination of AM.1.5, 100 mW/cm(2). The V-oc of 0.96 V for S(TPA-DHT-DCN) is among the top values for the solution-processed molecular-based OSCs reported so far. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：2546 / 2552

页数：7

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