Narayanan, Remya and Deepa, Melepurath and Srivastava, Avanish Kumar and Shivaprasad, Sonnada Math (2014) Efficient Plasmonic Dye-Sensitized Solar Cells with Fluorescent Au-Encapsulated C-Dots. ChemPhysChem, 15 (6). pp. 1106-1115. ISSN 1439-4235

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A simple strategy to improve the efficiency of a ZnO-nanorod-based dye-sensitized solar cell (DSSC) by use of Au-encapsulated carbon dots (Au@C-dots) in the photoanode is presented. The localized surface plasmonic resonance of Au in the 500-550 nm range coupled with the ability of C-dots to undergo charge separation increase the energy-harvesting efficiency of the DSSC with ZnO/N719/Au@C-dots photoanodes. Charge transfer from N719 dye to Au@C-dots is confirmed by fluorescence and lifetime enhancements of Au@C-dots. Forster resonance energy transfer (FRET) from the gap states of ZnO nanorods to N719 dye is also ratified and the energy transfer rate is 4.4x10(8) s(-1) and the Forster radius is 1.89 nm. The overall power conversion efficiency of the plasmonic and FRET-enabled DSSC with ZnO/N719/Au@C-dots as the photoanode, I-2/I- as the electrolyte and multiwalled carbon nanotubes as the counter electrode is 4.1%, greater by 29% compared to a traditional ZnO/N719 cell.

Item Type: Article
Additional Information: Copyright for this article belongs to M/S Wiley-VCH Verlag.
Subjects: Chemistry
Depositing User: Dr. Rajpal Walke
Date Deposited: 22 Sep 2015 11:15
Last Modified: 22 Sep 2015 11:15

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