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Issue 10, 2016
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Solution-processed VOx prepared using a novel synthetic method as the hole extraction layer for polymer solar cells

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Abstract

In this study, we report solution-processed vanadium oxide (s-VOx) as the hole extraction layer (HEL) for polymer solar cells (PSCs). A s-VOx thin film is prepared simply by the spin-coating of ammonium metavanadate ammonal water solution on the surface of indium tin oxide (ITO) coated glass substrates, followed by thermal annealing at 210 °C for 5 minutes in air. The scanning Kelvin probe measurement indicates that the work function of the s-VOx HEL is −5.3 eV, which allows most of the conjugated polymers to form an Ohmic contact with the s-VOx HEL, resulting in a large open-circuit voltage for PSCs. It is found that PSCs incorporated with the s-VOx HEL possess a comparable power conversion efficiency and better shelf-stability with those incorporated with the poly (3,4-ethylenedioxythiophene) : poly-(styrenesulfonate) anode buffer layer. Thus, our method provides a simple approach to prepare a solution-processed s-VOx HEL for higher performance PSCs.

Graphical abstract: Solution-processed VOx prepared using a novel synthetic method as the hole extraction layer for polymer solar cells

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Article information


Submitted
10 Jan 2016
Accepted
05 Feb 2016
First published
05 Feb 2016

J. Mater. Chem. C, 2016,4, 1953-1958
Article type
Paper

Solution-processed VOx prepared using a novel synthetic method as the hole extraction layer for polymer solar cells

W. Xu, Y. Liu, X. Huang, L. Jiang, Q. Li, X. Hu, F. Huang, X. Gong and Y. Cao, J. Mater. Chem. C, 2016, 4, 1953
DOI: 10.1039/C6TC00109B

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