Electroluminescent device comprising a transition metal oxide doped with a trivalent rare earth element

Abstract

Abstract An electroluminescent device includes a layer including a transition metal oxide doped with a trivalent rare earth metal. The transition metal oxide has the general formula, Mxi(MiiOy)z where Mi is a Group IIA element or a group IIIB element, Mii is a transition metal, O is oxygen and the subscripts x, y and z denote the number of each of the elements depending on the valences of the particular elements used. The layer may be in the form of a single crystalline body of the doped transition metal oxide or particles of the transition metal oxide in a dielectric medium. A pair of spaced contacts are provided on the layer. For the single crystalline body one of the contacts is a blocking contact and the other is an ohmic contact. For the layer which includes the particles in a dielectric medium, both contacts are blocking contacts. Light is emitted from the layer when a current is applied through the layer between the contacts; DC current being used for the single crystalline body and AC current for the particles in a dielectric medium.

Inventors

• 👤 W Yim
• 👤 P Yocom

Bibliographic Details