抄録
Y2O3 with Eu3+ incorporated is known to exhibit an intense red emission found its feasibility in a number of applications. Here we report about this emission in chemical-vapor-deposited on the YSZ substrate Y2O3:Eu3+ whiskers. In trading off the luminescence properties of these whiskers a temperature stimulated increase of the red emission was found. A time-resolved spectroscopy of all emission lines from DJ (J=0,1,2) manifold of the Eu3+ ion was performed in order to analyze this newly observed increase in a temperature range 300 K-1000 K. A temperature-dependent contribution to the electronic levels of the Eu3+ ion related to the emission increase has been confirmed from these measurements. It was found that this contribution is due to a multiphonon relaxation within Eu3+ ion. This fact motivates us to discuss an observed temperature-dependent behavior of the Eu3+ emission as being solely due this process.
