Comparative study of plasma and ion-beam treatment to reduce the oxygen vacancies in TiO2 and recombination reactions in dye-sensitized solar cells

Title
Comparative study of plasma and ion-beam treatment to reduce the oxygen vacancies in TiO2 and recombination reactions in dye-sensitized solar cells
Authors
Md. Khaled Parvez유기문김주호고민재김성룡
Keywords
dye-sensitized; plasma; ion-beam; TiO2
Issue Date
2010-07
Publisher
Chemical physics letters
Citation
VOL 495, NO 1-3, 69-72
Abstract
Oxygen plasma and ion-beam treatments of nano-structured TiO2 were carried out to enhance the efficiency of dye-sensitized solar cells (DSSCs). Relative changes in surface states and recombination reactions were examined. Comparative studies showed that the oxygen ion-beam treatment was more effective in reducing the number of oxygen vacancies in TiO2 and the recombination reactions between TiO2 conduction band electrons and I ̄3 ions in the electrolyte than the plasma treatment. Oxygen ionbeam treated TiO2 film in the DSSC showed a 23 mV increase in the open-circuit voltage (Voc) and an improvement in the photo-conversion efficiency from 5.05% to 6.64%.
URI
http://pubs.kist.re.kr/handle/201004/37726
ISSN
0009-2614
Appears in Collections:
KIST Publication > Article
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