We have studied the structural and near-infrared (NIR) luminescent properties of KY3F10phosphors, singly doped with Nd3+serving as both sensitizer and activator. With a single laser diode at the wavelength of 808 nm as a pump source, simultaneous NIR-to-NIR upconversion (UC) and down-shifting (DS) emissions are effectively achieved, due to the specific energy levels of Nd3+dopant and the low phonon energy of the host. The luminescence mechanism related to energy transfer is discussed. The luminescence can be modulated through controlling he population of Nd3+:4F3/2state in our experiment. Interestingly, both UC and DS emissions of the material fall within the dual biological window, suggesting that the prepared phosphors have potential applications in the bioimaging field.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)