Enhancement of TiO2 nanoparticle properties and efficiency of dye-sensitized solar cells using modifiers
Rashad, Mohamed (Central Metallurgical Research and Development Institute (Egipte))
Shalan, Ahmed Esmail (Institut Català de Nanociència i Nanotecnologia)
Lira-Cantu, Monica (Institut Català de Nanociència i Nanotecnologia)
Abdel-Mottaleb, M. S. A. (Ain Shams University (El Caire, Egipte))

Date:	2013
Abstract:	A low-temperature hydrothermal process developed to synthesizes titania nanoparticles with controlled size. We investigate the effects of modifier substances, urea, on surface chemistry of titania (TiO) nanopowder and its applications in dye-sensitized solar cells (DSSCs). Treating the nanoparticles with a modifier solution changes its morphology, which allows the TiO nanoparticles to exhibit properties that differ from untreated TiO nanoparticles. The obtained TiO nanoparticle electrodes characterized by XRD, SEM, TEM/HRTEM, UV-VIS Spectroscopy and FTIR. Experimental results indicate that the effect of bulk traps and the surface states within the TiO nanoparticle films using modifiers enhances the efficiency in DSSCs. Under 100-mW cm simulated sunlight, the titania nanoparticles DSSC showed solar energy conversion efficiency = 4. 6 %, with V = 0. 74 V, J = 9. 7324 mA cm, and fill factor = 71. 35.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Dye-sensitized solar cells ; Titania nanoparticles ; Modifiers ; Electron transport ; Photovoltaic performance
Published in:	Applied Nanoscience, Vol. 3, Issue 2 (April 2013) , p. 167-174, ISSN 2190-5517

DOI: 10.1007/s13204-012-0117-5

8 p, 1.7 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles