The Function of TiO2 with Respect to Sensitizer Stability in Nanocrystalline Dye Solar Cells
Joint Authors
Barkschat, A.
Tributsch, H.
Moehl, T.
Macht, B.
Source
International Journal of Photoenergy
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-02-21
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Dyes of characteristically different composition have been tested with respect to long-term stability in operating standardized dye sensitized cells during a time period of up to 3600 hours.
Selective solar illumination, the use of graded filters, and imaging of photocurrents revealed that degradation is linked to the density of photocurrent passed.
Photoelectrochemical degradation was observed with all sensitizers investigated.
Sensitization was less efficient and sensitizers were less photostable with nanostructured ZnO compared to nanostructured TiO2.
The best performance was confirmed for cis-RuII(dcbpyH2)2(NCS)2 on TiO2.
However, it was 7–10 times less stable under other identical conditions on ZnO.
Stability is favored by carboxylate anchoring and metal-centred electron transfer.
In presence of TiO2, it is enhanced by formation of a stabilizing charge-transfer complex between oxidized Ru dye and back-bonding interfacial Ti3+ states.
This is considered to be the main reason for the ongoing use of expensive Ru complexes in combination with TiO2.
The local surface chemistry of the nanocrystalline TiO2 turned out to be a crucial factor for sensitizer stability and requires further investigation.
American Psychological Association (APA)
Barkschat, A.& Moehl, T.& Macht, B.& Tributsch, H.. 2008. The Function of TiO2 with Respect to Sensitizer Stability in Nanocrystalline Dye Solar Cells. International Journal of Photoenergy،Vol. 2008, no. 2008, pp.1-13.
https://search.emarefa.net/detail/BIM-987948
Modern Language Association (MLA)
Barkschat, A.…[et al.]. The Function of TiO2 with Respect to Sensitizer Stability in Nanocrystalline Dye Solar Cells. International Journal of Photoenergy No. 2008 (2008), pp.1-13.
https://search.emarefa.net/detail/BIM-987948
American Medical Association (AMA)
Barkschat, A.& Moehl, T.& Macht, B.& Tributsch, H.. The Function of TiO2 with Respect to Sensitizer Stability in Nanocrystalline Dye Solar Cells. International Journal of Photoenergy. 2008. Vol. 2008, no. 2008, pp.1-13.
https://search.emarefa.net/detail/BIM-987948
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-987948