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Fluorescence enhancing under UV-NIR simultaneous-excitation in ZnS:Cu,Mn phosphors

Author(s): L. J. Xie | S. Y. Zou | R. Zhang | J. L. Cai | Y. Zou | L. W. Cao | J. X. Meng

Journal: AIP Advances
ISSN 2158-3226

Volume: 2;
Issue: 4;
Start page: 042172;
Date: 2012;
Original page

The fluorescence properties of a long-lasting phosphor, ZnS:Cu,Mn was studied for the first time under simultaneously excitation of both UV and NIR light. Up to 20% fluorescence enhancement of the phosphor was observed. In the present simultaneously-excitation process, broad-band NIR light was absorbed and converted to visible photons via a single-photon upconversion path. We propose that a novel kind of spectral-conversion material with the unique ability to simultaneously convert both UV and NIR photons can be developed and is promising in the application of enhancing the EQE of solar cells.
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