Tuning of structural, laser power-dependent and temperature dependent luminescence properties of NaYF4:Yb, Er (Y: 88%, Yb: 10 and Er: 2%) submicron crystals using Cr3+ ion doping

In this work, we show the influence of Cr3þ ion concentration (1e7 mol%) on the crystalline phase and shape, laser power dependent luminescence response, and temperature response in physiological temperature range for NaYF4:Yb, Er (Y: 88%, Yb: 10% and Er: 2%) submicron crystals prepared via hydrothermal method. The atomic absorption spectral studies indicate the successful incorporation of the Cr3þ ions into NaYF4:Yb, Er (Y: 88%, Yb: 10% and Er:...