科研之友
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摘要
In order to extend the photon energy shift of sensitized upconversion processes based on triplet triplet annihilation in multicomponent organic systems, we have demonstrated that it is possible to exploit a sequence of consecutive upconversion steps. We have therefore realized an all-optical device for double upconversion: a light blue-shift of more than 0.9 eV was obtained at an excitation irradiance of a few tens of milliwatts per square centimeter.
- 出版日期2014-2-27
