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
收藏
页码：2360 / 2369
页数：10
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