Electroluminescence from single crystal Cu2O diodes

Abstract

We have measured the infrared electroluminescence in different types of single crystal Cu2O–Cu diodes under forward bias at various temperatures. Diodes which showed double-injection current-voltage characteristics in previous studies showed transient electroluminescence response at low currents and dc response at higher currents. On the other hand, diodes that showed the characteristics of single injection in previous studies showed transient electroluminescence response only. We have related the present studies on electroluminescence with the previous findings. Furthermore the present studies also revealed some information on the injection process. We have also discussed the differences and similarities between electroluminescence and photoluminescence of Cu2O.