Electroluminescence as a Function of Electric Field and Temperature in Amorphous Silicon-Carbon Based p-i-n Structures

Abstract

ABSTRACTElectroluminescence at room temperature with a peak energy between 1.6 and 1.8 eV is observed in a-SiC:H p-i-n devices containing thin injection layers of high bandgap a-SiC:H. The temperature dependence of electroluminescence between 80 K and 320 K is much weaker than expected from the photoluminescence signal. No shift of the electroluminescence spectrum is observed up to voltages of 20 V applied across a 110 nm thick device. The results are compared to well-known features of electroluminescence in a-Si:H devices.