A new diketopyrrolopyrrole-based co-polymer for ambipolar field-effect transistors and solar cells

Tandy, Kristen, Dutta, Gitish K., Zhang, Yuliang, Venkatramaiah, N., Aljada, Muhsen, Burn, Paul L., Meredith, Paul, Namdas, Ebinazar B. and Patil, Satish (2012) A new diketopyrrolopyrrole-based co-polymer for ambipolar field-effect transistors and solar cells. Organic Electronics, 13 10: 1981-1988.


Author Tandy, Kristen
Dutta, Gitish K.
Zhang, Yuliang
Venkatramaiah, N.
Aljada, Muhsen
Burn, Paul L.
Meredith, Paul
Namdas, Ebinazar B.
Patil, Satish
Title A new diketopyrrolopyrrole-based co-polymer for ambipolar field-effect transistors and solar cells
Journal name Organic Electronics   Check publisher's open access policy
ISSN 1566-1199
1878-5530
Publication date 2012-10
Sub-type Article (original research)
DOI 10.1016/j.orgel.2012.05.046
Volume 13
Issue 10
Start page 1981
End page 1988
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2013
Language eng
Formatted abstract A new thieno[3,2-b]thiophenediketopyrrolopyrrole-benzo[1,2-b:4,5-b′]dithiophene based narrow optical gap co-polymer (PTTDPP-BDT) has been synthesized and characterized for field-effect transistors and solar cells. In field-effect transistors the polymer exhibited ambipolar charge transport behaviour with maximum hole and electron mobilities of 10−3 cm2 V−1 s−1 and 10−5 cm2 V−1 s−1, respectively. The respectable charge transporting properties of the polymer were consistent with X-ray diffraction measurements that showed close molecular packing in the solid state. The difference in hole and electron mobilities was explained by density functional theory calculations, which showed that the highest occupied molecular orbital was delocalized along the polymer backbone with the lowest unoccupied molecular orbital localized on the bis(thieno[3,2-b]thiophene)diketopyrrolopyrrole units. Bulk heterojunction photovoltaic devices with the fullerene acceptor PC70BM were fabricated and delivered a maximum conversion efficiency of 3.3% under AM1.5G illumination.
Keyword Field-effect transistors
Solar cells
Donor-acceptor
Semiconducting polymers
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2013 Collection
School of Chemistry and Molecular Biosciences
 
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