Please use this identifier to cite or link to this item:
|Title:||Band engineered ternary solid solution CdS xSe 1-x-sensitized mesoscopic TiO 2 solar cells||Authors:||Hossain, M.A.
|Issue Date:||21-May-2012||Citation:||Hossain, M.A., Jennings, J.R., Mathews, N., Wang, Q. (2012-05-21). Band engineered ternary solid solution CdS xSe 1-x-sensitized mesoscopic TiO 2 solar cells. Physical Chemistry Chemical Physics 14 (19) : 7154-7161. ScholarBank@NUS Repository. https://doi.org/10.1039/c2cp40277g||Abstract:||The optical band gap of the light absorber and the alignment of its bands with the underlying wide band gap metal oxide are critical for efficient light harvesting and charge separation in semiconductor-sensitized solar cells (SSCs). In practice, these two requirements are however not always fulfilled concomitantly in SSCs. Favourable band alignment in CdSe-sensitized TiO 2 requires utilization of quantum sized CdSe, which causes great losses in the harvesting of long wavelength photons due to quantum confinement effects. In the present study, ternary cadmium sulfoselenide (CdS xSe 1-x), which has a tunable band gap between those of CdSe and CdS without reducing the dimension, was proposed as a sensitizer for TiO 2. CdS xSe 1-x was successfully synthesized by alternately depositing CdS and CdSe layers under ambient conditions. SSCs utilizing CdS xSe 1-x-sensitized TiO 2 yielded a power conversion efficiency of 4.05% under simulated AM1.5 100 mW cm -2 illumination, rivalling the well-studied cascaded CdS/CdSe electrodes when an aqueous polysulfide solution was used as the electrolyte and Cu 2S as the counter electrode. The findings of the present study provide an alternative and viable approach for optimizing the energetics of semiconductor sensitizers for efficient charge separation, while also maintaining good light harvesting. © 2012 the Owner Societies.||Source Title:||Physical Chemistry Chemical Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/86194||ISSN:||14639076||DOI:||10.1039/c2cp40277g|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 27, 2020
WEB OF SCIENCETM
checked on Oct 27, 2020
checked on Oct 11, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.