An Organic Surface Modifier to Produce a High Work Function Transparent Electrode for High Performance Polymer Solar Cells

An Organic Surface Modifier to Produce a High Work Function Transparent Electrode for High Performance Polymer Solar Cells

Modification of an ITO electrode with small‐molecule organic surface modifier, 4‐chloro­benzoic acid (CBA), via a simple spin‐coating method produces a high‐work‐function electrode with high transparency and a hydrophobic surface. As an alternative to PEDOT:PSS, CBA modification achieves efficiency...

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Veröffentlicht in:Advanced materials (Weinheim) 2015-02, Vol.27 (5), p.892-896
Hauptverfasser: Choi, Hyosung, Kim, Hak-Beom, Ko, Seo-Jin, Kim, Jin Young, Heeger, Alan J.
Format: Artikel
Sprache:eng
Schlagworte:
Anodes
Electrodes
high work function
hole transport layers
Light absorption
organic surface modifiers
Photovoltaic cells
polymer solar cells
Solar cells
Surface chemistry
Transport
Work functions
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Zusammenfassung:Modification of an ITO electrode with small‐molecule organic surface modifier, 4‐chloro­benzoic acid (CBA), via a simple spin‐coating method produces a high‐work‐function electrode with high transparency and a hydrophobic surface. As an alternative to PEDOT:PSS, CBA modification achieves efficiency enhancement up to 8.5%, which is attributed to enhanced light absorption within the active layer and smooth hole transport from the active layer to the anode.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201404172