[14p-2B-1~10] 13.9 Optical properties and light-emitting devices

[14p-2B-2] Electric and electroluminescence properties of Ca_0.6Sr_0.4TiO₃:Pr/In₂O₃:Sn multilayers prepared by a sol-gel method

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

Keywords:inorganic electroluminescence,thin film

Inorganic electroluminescent devices of Ca_0.6Sr_0.4TiO₃:Pr/In₂O₃:Sn multilayer was prepared by a sol-gel method. Waveforms of current and electroluminescence were observed when sinusoidal voltage was applied to the devices. Current waveform was composed of two componets: One is a linear component of which the phase is advanced against the voltage. The other is a nonlinear component that is in phase against the voltage. Electroluminescence waveform was composed of two components: One is a component of which the intensity is proportional the current. The other is a component which is intense when the voltage sign is changed.