Ultrathin oxidized Ti to increase stability and smoothness of Al doped ZnO transparent conductors for high efficiency indium-free polymer solar cells

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/22799

Title:	Ultrathin oxidized Ti to increase stability and smoothness of Al doped ZnO transparent conductors for high efficiency indium-free polymer solar cells
Author:	Formica, Nadia; Ghosh, Dhriti Sundar; Martinez Otero, Alberto; Chen, T. L.; Martorell Pena, Jordi; Pruneri, Valerio
Other authors:	Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers
Abstract:	We propose a transparent electrode consisting of an aluminum doped zinc oxide (AZO) layer capped with an ultrathin oxidized Ti film for indium-free bulk-heterojunction polymer solar cells (PSCs). The oxidized Ti increases the chemical, environmental, stability and the surface smoothness of AZO while still maintaining its electrical and optical properties. The application potential of the proposed transparent electrode is demonstrated in an inverted PSC, which shows an efficiency of 6.3%, very close to the value (7%) obtained in a similar structure using indium tin oxide. This efficiency is the highest reported to date for PSCs incorporating AZO electrodes.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Energies::Energia solar fotovoltaica -Àrees temàtiques de la UPC::Física -Solar cells -Aluminum-doped zinc oxide -Bulk heterojunction -Electrical and optical properties -Polymer solar cell (PSCs) -Polymer Solar Cells -Surface smoothness -Transparent conductors -Transparent electrode -Cèl·lules solars
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Document type:	Article - Published version Article
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