Small Molecular Donors for Organic Solar Cells Obtained by Simple and Clean Synthesis

被引：26

作者：

Demeter, Dora ^{[1
]}

Mohamed, Salma ^{[1
]}

Diac, Andreea ^{[1
,2
]}

Grosu, Ion ^{[2
]}

Roncali, Jean ^{[1
]}

机构：

[1] Univ Angers, CNRS, Grp Linear Conjugated Syst, F-49045 Angers, France

[2] Univ Babes Bolyai, Ctr Supramol Organ & Organometall Chem CSOOMC, Cluj Napoca 400028, Romania

来源：

CHEMSUSCHEM | 2014年 / 7卷 / 04期

关键词：

condensations; donor-acceptor; energy conversion; photovoltaics; solar cells; CONJUGATED SYSTEMS; DYES; PHOTOVOLTAICS; PERFORMANCE; SEMICONDUCTORS; CONVERSION; CHEMISTRY; DESIGN; UNIT;

D O I：

10.1002/cssc.201301339

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A small donor-acceptor molecule is synthesized in a two-step procedure involving reaction of N,N-diphenylhydrazine on 2,5-diformylthiophene and Knoevenagel condensation. Results of UV/Vis absorption spectroscopy and cyclic voltammetry show that replacement of the phenyl ring bridge of a reference compound 2 by an azo group produces a slight red-shift of (max), an enhancement of the molecular absorption coefficient, and a decrease of the energy level of the frontier orbitals. A preliminary evaluation of the potentialities of compound 1 as donor material in a basic bilayer planar heterojunction cell of 28mm(2) active area using C-60 as acceptor gave a short-circuit current density of 6.32mAcm(-2) and a power conversion efficiency of 2.07%.

引用

页码：1046 / 1050

页数：5

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