Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 3, Issue 9, Pages 3239-3243Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am200537e
Keywords
dye-sensitized solar cell; external layer; hydrothermal; nanoplatelets; NaYF4:Er3+/Yb3+; up-conversion; reflection
Funding
- NSERC (the Natural Sciences and Engineering Research Council of Canada)
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Uniform beta-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.
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