Polyvinylpyrrolidone-modified indium tin oxide as an electron-collecting electrode for inverted polymer solar cells

Title
Polyvinylpyrrolidone-modified indium tin oxide as an electron-collecting electrode for inverted polymer solar cells
Authors
J. W. ShimH. CheunJ. MeyerC. Fuentes-HernandezA. DindarY. H. Zhou황도경A. KahnB. Kippelen
Issue Date
2012-08
Publisher
Applied physics letters
Citation
VOL 101, 073303-1-073303-4
Abstract
We report on the photovoltaic properties of inverted polymer solar cells that use a polyvinylpyrrolidone (PVP) modified indium tin oxide (ITO) layer as the electron-collecting electrode. An ultrathin PVP layer, prepared by spin-coating, on top of ITO, was used to induce a reduction of its work function, allowing it to act as an electron-collecting electrode. Devices made on pristine ITO showed s-shape current-voltage characteristics, which were removed after exposure to ultraviolet radiation due to a reduction of the work function of ITO. Inverted solar cells with ITO/PVP electrodes yield efficiencies comparable to devices with ITO/ZnO electron-selective electrodes.
URI
http://pubs.kist.re.kr/handle/201004/45705
ISSN
00036951
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KIST Publication > Article
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