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Issue 24, 2014
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Work-function tuneable and aqueous solution-processed Cs2CO3 for high-performance polymer solar cells

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Abstract

The authors demonstrate an aqueous solution-processed Cs2CO3 thin film with an adjustable work function via MoO3 and/or Na2WO4 doping. The doped Cs2CO3 as a cathode interfacial layer is successfully used in poly(3-hexyl-thiophene) (P3HT)/indene-C60 bisadduct (IC60BA) heterojunction based solar cells with improved open-circuit voltage and unaffected short-circuit current density. X-ray photoelectron spectroscopy (XPS) evaluation was conducted to verify the formation of the new composites of W–O–Cs and Mo–O–Cs after doping of MoO3 and/or Na2WO4 into Cs2CO3. The change of the work function of MoO3- and/or Na2WO4-doped Cs2CO3 was further confirmed by ultraviolet photoelectron spectroscopy (UPS) measurements.

Graphical abstract: Work-function tuneable and aqueous solution-processed Cs2CO3 for high-performance polymer solar cells

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Supplementary files

Article information


Submitted
26 Mar 2014
Accepted
08 Apr 2014
First published
08 Apr 2014

J. Mater. Chem. A, 2014,2, 9400-9404
Article type
Paper

Work-function tuneable and aqueous solution-processed Cs2CO3 for high-performance polymer solar cells

M. Xu, Y. Liao, F. Zu, J. Liang, D. Yuan, Z. Wang and L. Liao, J. Mater. Chem. A, 2014, 2, 9400
DOI: 10.1039/C4TA01441C

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