Abstract
In this Letter, we present the observation of super-intense upconversion (UC) white emission of under 980 nm excitation, its evolution on excitation power density, the UC mechanism, and its application on the luminescence converter of dye-sensitized solar cells (DSSCs). It is significant to observe that demonstrates at least one order more intense UC luminescence than -phase , and exhibit much better photovoltaic performance than -phase , under strong excitation. This indicates that would become a novel candidate of the solar energy converter, especially in the application of concentrator solar cells.
© 2013 Optical Society of America
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