Synthesis of new dithieno[3,2-b:2′,3′-d]pyrrole (DTP) units for photovoltaic cells

被引：14
|
作者：
Ge, Gaoyang [1 ]
Dai, Panpan [1 ]
Lu, Ziyi [1 ]
Liang, Mao [1 ,2 ]
Dong, Huanhuan [1 ]
Sun, Zhe [1 ]
Xue, Song [1 ]
机构：
[1] Tianjin Univ Technol, Dept Appl Chem, Tianjin Key Lab Organ Solar Cells & Photochem Con, Tianjin 300384, Peoples R China
[2] Nankai Univ, Chem Coll, KLAEMC, Minist Educ, Tianjin 300071, Peoples R China
来源：
DYES AND PIGMENTS | 2016年 / 128卷
基金：
中国国家自然科学基金;
关键词：
Dye-sensitized solar cells; Photovoltaic; Organic dye; Dithieno[3,2-b:2 ',3 '-d]pyrrole; Power conversion efficiency; Truxene; SENSITIZED SOLAR-CELLS; D-PI-A; BAND-GAP CHROMOPHORES; ORGANIC-DYES; RECOMBINATION KINETICS; INDOLINE DYES; EFFICIENT; PERFORMANCE; THIOPHENE; IODINE;
D O I：
10.1016/j.dyepig.2016.01.007
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Three new dithieno[3,2-b:2',3'-d]pyrrole units (DTPA1-3) based on the truxene core have been designed and synthesized for a potential application in photovoltaic cells. One of these units (DTPA1) has been employed to construct a new organic dye (M47), exhibiting a higher solar-to-electrical energy conversion efficiency when compared to reference dyes (M48 and M49) under the same conditions. Absorption spectra, electrochemical cyclic voltammetry, theoretical calculations, current voltage curves and controlled intensity modulated photovoltage spectroscopy have been investigated. M47 sensitized solar cells employing a cobalt electrolyte afford a short circuit photocurrent of 12.1 mA cm-2, an open circuit voltage of 758 mV, and a fill factor of 0.56, corresponding to an overall power conversion efficiency of 5.1% under standard AM 1.5 sunlight. These results suggest that the truxene-substituted dithieno[3,2b:2',3'-d]pyrrole derivatives are promising candidates for photovoltaic cells. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：8 / 18
页数：11
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