1:45 PM - 2:00 PM
[7p-A414-3] Study of Thermal Quenching in Lu3(Al, Ga)5O12:Ce by using TRMC Technique
Keywords:phosphor, thermal quenching, photoconductivity
The thermal quenching in Lu3Al5-xGaxO12:Ce (x = 0-3) has been investigated by using TRMC technique. The samples with x values greater than 1 showed the photoconductivity at room temperature and it increased dramatically with increasing Ga-content. It is suspected that reduced bandgap energies and the shift of Ce 5d levels to higher energies cause the photocarrier generation.