Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.orgel.2011.03.023
Title: Low-band gap copolymers of ethynylfluorene and 3,6-dithiophen-2-yl-2,5- dihydropyrrolo[3,4-c]pyrrole-1,4-dione synthesized under microwave irradiation for polymer photovoltaic cells
Authors: Wu, Z. 
Fan, B. 
Li, A. 
Xue, F. 
Ouyang, J. 
Keywords: Band gap
Copolymer
Microwave
Polymer photovoltaic cells
Sonogashira coupling
Issue Date: Jun-2011
Source: Wu, Z., Fan, B., Li, A., Xue, F., Ouyang, J. (2011-06). Low-band gap copolymers of ethynylfluorene and 3,6-dithiophen-2-yl-2,5- dihydropyrrolo[3,4-c]pyrrole-1,4-dione synthesized under microwave irradiation for polymer photovoltaic cells. Organic Electronics: physics, materials, applications 12 (6) : 993-1002. ScholarBank@NUS Repository. https://doi.org/10.1016/j.orgel.2011.03.023
Abstract: Copolymers with alternative electron-donating and electron-withdrawing units can exhibit a low-band gap and can be used as the donor materials in polymer photovoltaic cells (PVs). This paper reports the synthesis of copolymers of electron-donating ethynylfluorene and electron-withdrawing 3,6-dithiophen-2-yl-2,5-dihydropyrrolo[3,4-c]pyyrole-1,4-dione (DPP) via the Pd-catalyzed Sonogashira coupling and their application in polymer PVs. Applying microwave irradiation during the Sonogashira coupling can shorten the polymerization time from several days to a couple of minutes and improve the molecular weight. These polymers have band gaps of about 1.85 eV. Their energy levels indicate that they can be used as the donor materials for polymer PVs. Polymer PVs were fabricated using these polymers as donors and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as acceptor. Applying the microwave irradiation during the Sonogashira coupling can significantly improve the photovoltaic performance of the polymer PVs. Power conversion efficiency (PCE) of 2.25% was achieved on polymer PVs under AM 1.5G illumination (100 mW cm-2). © 2011 Elsevier B.V. All rights reserved.
Source Title: Organic Electronics: physics, materials, applications
URI: http://scholarbank.nus.edu.sg/handle/10635/86503
ISSN: 15661199
DOI: 10.1016/j.orgel.2011.03.023
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

20
checked on Feb 26, 2018

WEB OF SCIENCETM
Citations

19
checked on Feb 26, 2018

Page view(s)

30
checked on Feb 25, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.