Abstract

Mn²⁺ ions and rare-earth ions (Ln³⁺) such as Tb^{3 +} ions are most commonly used as luminescent centers in ZnS thin film electroluminescence (EL) devices.¹⁾ Luminescence of Mn²⁺ and that of Ln^{3 +} ions are due to parity-forbidden (d-d) and (f-f) transitions, respectively. We report here, a greenish-white EL due to parity-allowed 5d-4f transition of Ce³⁺ ions in a double insulated ZnS:CeF₃ thin film device, for the first time.

© 1984 Optical Society of America