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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/851

Title: Investigation of the effect of sol processing parameters on the photoelectrical properties of dye-sensitized TiO2 solar cells
Authors: SRIKANTH, K
MDMRAHMAN
TANAKA, H
KRISHNA, KM
SOGA, T
MISHRA, MK
JIMBO, T
UMENO, M
Keywords: sol-gel processing
semiconductor growth
surface topography
semiconductor thin films
Issue Date: 2001
Publisher: Elsevier
Citation: Solar Energy Materials and Solar Cells 65(1-4), 171-177
Abstract: Sol-gel spin-coating method has been explored to prepare nano-crystalline TiO2 films for dye-sensitized TiO2 solar cell application. Effects of evaporation temperature at which the sol is concentrated and addition of polyethelene glycol (PEG) to the sol at different concentrations on film thickness, surface morphology and solar cell performance are studied. Conversion efficiency is found to increase with PEG addition up to 40 % by weight of TiO2 and then decrease with further addition due to the development of cracks in the films. Higher conversion efficiency has been obtained with the sol concentrated at 40°C than at room temperature (30°C) after which it is found to decrease with increase in temperature due to higher degree of agglomeration caused by faster rate of evaporation. Further, it is observed that though the photocurrent and efficiency gradually increase with thickness at relatively lower thicknesses, a saturation in the photocurrent occurs at higher thicknesses.
URI: http://dx.doi.org/10.1016/S0927-0248(00)00092-1
http://hdl.handle.net/10054/851
http://dspace.library.iitb.ac.in/xmlui/handle/10054/851
ISSN: 0927-0248
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