Preparation of ZnS : TbF₃ Electroluminescent Evaporated Film and its Optical and Electrical Properties

Abstract

Electroluminescent cells are fabricated by means of the vacuum evaporation of ZnS and TbF₃ powder on anode oxided Ta₂O₅ films. The optical and electrical propertise of these cells are investigated.
Some of these EL cells are found to exhibit fairly stable luminescence, not only under an a.c. voltage excitation as previously reported, but also under a d.c. voltage excitation. The EL characteristics under a.c. and d.c. excitation are reported.