This paper presents the near infrared and visible upconversion of Yb3Ga5O[Formula: see text] garnet samples. The samples were doped with two different dopants (either Er[Formula: see text] or Nd[Formula: see text]) and excited with 805[Formula: see text]nm. Intense infrared emission was observed with the Nd[Formula: see text] doped sample and relatively weak visible blue-green and red emissions were observed for both the Er[Formula: see text] and Nd[Formula: see text] doped samples. The infrared emission intensities for the Nd[Formula: see text] doped sample was found to increase with the increase in the Nd[Formula: see text] ion concentration while that of the Er[Formula: see text] ion decreases with the increasing Er[Formula: see text] ion concentration. Also, to ascertain the back energy transfer from the Yb[Formula: see text] ion to Nd[Formula: see text], the samples were excited with a 980[Formula: see text]nm source. No visible or infrared emission was observed for the Nd[Formula: see text] doped sample indicating the absence of the back energy transfer. The luminescence properties of the sample signifies its readiness for application in biological imaging and laser generators.
Ligand-Assisted Back Energy Transfer in Luminescent TbIII
Complexes for Thermosensing Properties
