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PREPARATION AND CHARACTERIZATION OF A PBTIO3+PBO MIXED-OXIDE PHOTOELECTRODE

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Title PREPARATION AND CHARACTERIZATION OF A PBTIO3+PBO MIXED-OXIDE PHOTOELECTRODE
 
Creator KRISHNA, KM
SHARON, M
MISHRA, MK
 
Subject solar-cell
electrodes
mixed-oxides semiconductor
solar cells
conversion efficiency
 
Description A new PbTiO3 + PbO photoelectrode system for a photoelectrochemical cell has been prepared from a mixture of beta-PbO2 and TiO2 by solid state sintering. The crystal structure and surface morphology of the mixture were determined by X-ray diffraction and scanning electron microscopy respectively, and energy dispersive X-ray analysis measurements were used to establish the phases present. These studies reveal the photoelectrode as a PbO-rich PbTiO3 mixed-phase oxide with high tetragonality and a crystalline nature. Mott-Schottky plots and photoelectrochemical measurements, such as the action spectrum, I-V characteristics etc., of this mixed oxide were evaluated in 0.1 M Fe(CN)(6)(3-/4-) (pH 9.2 buffer) redox electrolyte. These investigations suggest that the mixed-oxide electrode exhibits n-type conductivity, a decreased band-gap energy and an enhanced absorption range in the visible region.
 
Publisher ELSEVIER SCIENCE SA LAUSANNE
 
Date 2011-07-29T11:38:43Z
2011-12-26T12:48:40Z
2011-12-27T05:49:45Z
2011-07-29T11:38:43Z
2011-12-26T12:48:40Z
2011-12-27T05:49:45Z
1995
 
Type Article
 
Identifier JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 391(1-2), 93-99
0022-0728
http://dx.doi.org/10.1016/0022-0728(95)03905-V
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7697
http://hdl.handle.net/10054/7697
 
Language en