Abstract
As an approach to design efficient visible luminescent material at nano scale, ion-doped single-phase zinc oxide (ZnO) nano phosphor to obtain red emission suitable for LED/laser applications is reported. -doped ZnO nanoparticles with various concentrations of have been prepared by a simple solgel synthesis technique. Under the excitation of 488 nm, the photoluminescence emission spectra of the nano phosphor exhibit an intense emission with multiple and well-resolved narrow splitting peaking in the range from 640 to 667 nm, which is identified as the emission from the ion, corresponding to transition with multiple splitting due to the ZnO crystal field. The required excitation threshold for these emissions is, surprisingly, as low as , and the narrow line width () is found to be persistent even at higher temperatures. Such sharp emission from nanoparticles could be used for lasing applications.
© 2017 Optical Society of America
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