Synthesis and properties of end-capped sexithiophenes incorporating the ethylene dithiothiophene unit

被引：25

作者：

Mason, CR

Skabara, PJ

Cupertino, D

Schofield, J

Meghdadi, F

Ebner, B

Sariciftci, NS

机构：

[1] Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England

[2] Avecia Ltd, Manchester M9 8ZS, Lancs, England

[3] Johannes Kepler Univ Linz, LIOS, Linz Inst Organ Solar Cells, A-4040 Linz, Austria

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2005年 / 15卷 / 14期

关键词：

D O I：

10.1039/b415610b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two new end-capped sexithiophene derivatives (10a and 10b) have been synthesised and characterised by absorption spectroscopy, cyclic voltammetry and UV-vis spectroelectrochemistry. Both oligomers undergo two reversible, sequential oxidation processes (10a: E-1(1/2) = +0.61 V, E-2(1/2) + 0.97 V; 10b: E-1(1/2) 5 +0.70 V, E-2(1/2) + 0.91 V vs. Ag/AgCl) and the electronic band gaps of the materials are ca. 2.2 eV (solid state). Sexithiophene 10a has been incorporated as an electron donor material, with C-60 as acceptor, in a bilayer photovoltaic device. The power conversion efficiency is a modest 0.12%, whilst the maximum IPCE at 350 nm gave an external quantum efficiency of ca. 12%.

引用

页码：1446 / 1453

页数：8

共 45 条

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