skip to main content

Title: Near-infrared-to-near-infrared down-shifting and upconversion luminescence of KY{sub 3}F{sub 10} with single dopant of Nd{sup 3+} ion

We have studied the structural and near-infrared (NIR) luminescent properties of KY{sub 3}F{sub 10} phosphors, singly doped with Nd{sup 3+} 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 Nd{sup 3+} 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 the population of Nd{sup 3+}:{sup 4}F{sub 3/2} state 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.
Authors:
 [1] ;  [2] ; ;  [3] ; ; ;  [1] ;  [2]
  1. Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong (China)
  2. (China)
  3. State Key Laboratory of Luminescence Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641 (China)
Publication Date:
OSTI Identifier:
22489347
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 108; Journal Issue: 4; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DOPED MATERIALS; ENERGY LEVELS; ENERGY TRANSFER; LASERS; LUMINESCENCE; NEODYMIUM IONS; PHONONS; PHOSPHORS; SENSITIZERS; WAVELENGTHS