[7p-A414-1~17] 13.9 Optical properties and light-emitting devices

[7p-A414-17] Relaxation phenomena in electroluminescence of Ca_0.6Sr_0.4TiO₃:Pr thin films

〇Toru Kyomen¹, Makoto Yamada¹, Minoru Hanaya¹, Hiroshi Takashima² (1.Gunma Univ., 2.AIST)

Keywords:electroluminescence, thin film, oxide

Inorganic electroluminescent devices of thin film of Ca_0.6Sr_0.4TiO₃:Pr oxide phosphor were prepared by spin-coating and firing method. The electric and electroluminescent properties depend on the polarization direction. Especially, we found interesting relaxation phenomena that the electic current decreased but the luminacne increased with increasing time. In the presentation, we will discuss the reason of the irelaxation phenomena.