A sequential two-step near-infrared quantum splitting in Ho3+ singly doped NaYF4
Source abstract
Abstract
We demonstrated an efficient sequential two-step near-infrared (NIR) quantum splitting (QS) in a Ho3+ singly doped β-NaYF4. An incident high-energy ultraviolet (UV)-to-visible photon in the wavelength range of 300−560 nm, which enables the Ho3+:5F4,5S2 states excited, could be efficiently split into two NIR photons at 1015 and 1180 nm. Underlying mechanisms for the sequential two-step NIR-QS process are analyzed in terms of the diffuse reflection spectrum, static and dynamic photoemission spectra and monitored excitation spectra. Internal quantum yield is obtained up to 110% on the basis of experimental and theoretical calculation results.
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Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Inorganic Fluorides and Related Compounds · Perovskite Materials and Applications
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Affiliations
South China University of Technology 1 State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, , Guangzhou 510641, P. R. China
Sun Yat-Sen University 2 State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, , Guangzhou 510275, P. R. China
Funding
National Natural Science Foundation of China
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