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|Title:||Efficient Plasmonic Dye-Sensitized Solar Cells with Fluorescent Au-Encapsulated C-Dots|
Srivastava, Avanish Kumar
Shivaprasad, S. M.
Atomic, Molecular & Chemical Physics
Surface Plasmon Resonance
Nanostructured Zno Electrodes
|Publisher:||Wiley-V C H Verlag Gmbh|
|Citation:||Narayanan, R; Deepa, M; Srivastava, AK; Shivaprasad, SM, Efficient Plasmonic Dye-Sensitized Solar Cells with Fluorescent Au-Encapsulated C-Dots. Chemphyschem 2014, 15 (6) 1106-1115, http://dx.doi.org/10.1002/cphc.201300958|
|Abstract:||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.|
|Appears in Collections:||Research Articles (Shivaprasad, S. M.)|
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