Enhanced Performance of Dye-Sensitized Solar Cells by Utilization of an External, Bifunctional Layer Consisting of Uniform β-NaYF4:Er3+/Yb3+ Nanoplatelets

Uniform β-NaYF4:Er3+/Yb3+ hexagonal nanoplatelets were synthesized via a modified hydrothermal route, and the nanoplatelets were applied as an external, bifunctional layer in a novel DSC configuration consisting of only one internal TiO2 transparent layer. Approximately 10% enhancements of photocurr...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2011-09, Vol.3 (9), p.3239-3243
Main Authors: Shan, Guo-Bin, Assaaoudi, Hassane, Demopoulos, George P
Format: Article
Language:English
Online Access:Get full text
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Summary:Uniform β-NaYF4:Er3+/Yb3+ hexagonal nanoplatelets were synthesized via a modified hydrothermal route, and the nanoplatelets were applied as an external, bifunctional layer in a novel DSC configuration consisting of only one internal TiO2 transparent layer. Approximately 10% enhancements of photocurrent and overall DSC efficiency are demonstrated by the addition of the external layer, which exhibits two functions of light reflecting and near-infrared (NIR) light harvesting. The novel DSC configuration not only simplifies the DSC fabrication process but also eliminates charge recombination induced by the conducting up-converting nanocrystals when used internally thus opening the path for other more efficient up-converting nanocrystals to be designed and applied.
ISSN:1944-8244
1944-8252
DOI:10.1021/am200537e