Issue 19, 2015
From the journal:

Journal of Materials Chemistry A

D–A–π–A featured sensitizers containing an auxiliary acceptor of benzoxadiazole: molecular engineering and co-sensitization†

Haibo Zhu,‡a   Yongzhen Wu,‡a   Jingchuan Liu,a   Weiwei Zhang,a   Wenjun Wua  and  Wei-Hong Zhu*a  

* Corresponding authors

a Shanghai Key Laboratory of Functional Materials Chemistry, Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Collaborative Innovation Center for Coal Based Energy (i-CCE), East China University of Science and Technology, Shanghai 200237, P. R. China
E-mail: whzhu@ecust.edu.cn

Abstract

Two novel D–A–π–A organic sensitizers (WS-24 and WS-26) incorporating a benzoxadiazole (BOD) unit are synthesized for dye sensitized solar cells. An additional n-hexylthiophene unit is incorporated into WS-26 to decrease unfavourable dye aggregation, thus suppressing charge recombination and increasing the solubility. Incorporating an auxiliary acceptor of benzoxadiazole (BOD) into the π-bridge can red shift absorption bands, and sharply decrease the LUMO level. In virtue of co-sensitization, the WS-26 based DSSC device can achieve photovoltaic efficiency as high as 9.72%.

Graphical abstract: D–A–π–A featured sensitizers containing an auxiliary acceptor of benzoxadiazole: molecular engineering and co-sensitization

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Article information

DOI
https://doi.org/10.1039/C5TA01371B
Article type
Paper
Submitted
20 Feb 2015
Accepted
15 Apr 2015
First published
15 Apr 2015

J. Mater. Chem. A, 2015,3, 10603-10609

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D–A–π–A featured sensitizers containing an auxiliary acceptor of benzoxadiazole: molecular engineering and co-sensitization

H. Zhu, Y. Wu, J. Liu, W. Zhang, W. Wu and W. Zhu, J. Mater. Chem. A, 2015, 3, 10603 DOI: 10.1039/C5TA01371B

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