Enhancing the open circuit voltage of dye sensitized solar cells by surface engineering of silica particles in a gel electrolyte
Etgar, Lioz; Schuchardt, Guillaume; Costenaro, Daniele; Carniato, Fabio; Bisio, Chiara; Zakeeruddin, Shaik M.; Nazeeruddin, Mohammad K.; Marchese, Leonardo; Graetzel, Michael
2013

Abstract

We prepared a quasi-solid electrolyte for dye-sensitized solar cells (DSSCs) that consist of ionic liquid and modified silica particles. Commercial bare silica F5 particles and modified silica F5 by NH2 and NH3+ groups were prepared, and fully characterized. The best photovoltaic performance was observed using the NH2 modified silica particles giving an open circuit voltage (V-oc) of 815 mV, a short-circuit current (J(sc)) of 11.23 mA cm(-2), and a fill factor (FF) of 0.75 corresponding to an overall power conversion efficiency of 7.04% at 100 mW cm(-2) AM 1.5. The modification of the silica particles by NH2 groups increases the V-oc of DSSCs by around 60 mV compared to pure ionic liquid electrolyte based DSSCs.

Details

Title Enhancing the open circuit voltage of dye sensitized solar cells by surface engineering of silica particles in a gel electrolyte
Author(s) Etgar, Lioz ; Schuchardt, Guillaume ; Costenaro, Daniele ; Carniato, Fabio ; Bisio, Chiara ; Zakeeruddin, Shaik M. ; Nazeeruddin, Mohammad K. ; Marchese, Leonardo ; Graetzel, Michael
Published in Journal Of Materials Chemistry A
Pagination 6
Volume 1
Issue 35
Pages 10142-10147
Date 2013
Publisher Cambridge, Royal Society of Chemistry
ISSN 2050-7488
DOI https://doi.org/10.1039/c3ta11436h
Other identifier(s) View record in Web of Science
Laboratories LPI
Record Appears in Scientific production and competences > SB - School of Basic Sciences > ISIC - Institute of Chemical Sciences and Engineering > LPI - Laboratory of Photonics and Interfaces
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2013-10-01