Synthesis and Photovoltaic Properties of Formyl End-Capped Oligothiophenes

被引：7

作者：

Jiang, Chuanyu ^{[1
]}

Liu, Ping ^{[1
]}

Deng, Wenji ^{[2
]}

机构：

[1] S China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Peoples R China

[2] S China Univ Technol, Dept Appl Phys, Guangzhou 510640, Peoples R China

来源：

SYNTHETIC COMMUNICATIONS | 2009年 / 39卷 / 13期

关键词：

Flexible organic photovoltaic devices; intermolecular hydrogen bonding; oligothiophenes; DERIVATIVES; PERFORMANCE; TRANSISTORS; BEHAVIOR; DEVICES; FAMILY;

D O I：

10.1080/00397910802654849

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

For the purpose of developing novel photovoltaic materials, 5,5''-biformyl-2,2':5',2''-terthiophene (OHC-3T-CHO) and 5,5''''-biformyl-2,2':5',2'':5'',2''':5''',2''''-q-uinquethiophene (OHC-5T-CHO) were synthesized. The photovoltaic properties of OHC-3T-CHO and OHC-5T-CHO were studied. We have fabricated two flexible organic photovoltaic devices using OHC-3T-CHO, OHC-5T-CHO, and 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA). The PET-ITO (indium tin oxides coated with polyethylene terephthalate)/OHC-3T-CHO/PTCDA/Al device has an open circuit voltage (Voc) of 1.12V, and photoelectric conversion efficiency (PCE) of 1.00%, whereas the PET-ITO/OHC-5T-CHO/PTCDA/Al device has a Voc of 1.78V and PCE of 1.08%. Both devices have high Voc (1.12V and 1.78V). It is possible that intermolecular hydrogen bonding between the -CHO group of OHC-nT-CHO and the carboxylic dianhydride of PTCDA enhanced the efficiency by promoting forward interfacial electron transfer.

引用

页码：2360 / 2369

页数：10

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