Abstract
Influence of post heat treatment on particulate, structural, surface, and optical properties of YAG:Yb3+ nanoparticles prepared by glycothermal method is studied to understand factors for determining photoluminescence intensity. Characterization is performed on electron microscopy, X-ray diffractometry, infrared absorption spectroscopy, and optical measurements. Near infrared emission under 940nm near infrared excitation is observed at 1029nm corresponding to 2F5/2→2F7/2 transition of Yb3+. Subsequent heat treatment causes crystallite growth and elimination of hydroxyl groups, resulting in an enhancement of the near infrared emission.
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