HYDROGENATED AMORPHOUS SILICON-CARBIDE THIN-FILM LIGHT-EMITTING DIODE WITH QUANTUM-WELL-INJECTION STRUCTURE

Abstract

To improve the electroluminescence (EL) intensity of the hydrogenated amorphous silicon carbide (a-SiC:H) pin thin-film light-emitting diode (TFLED), a quantum-well-injection (QWI) structure has been incorporated into the i-layer of an a-SiC:H pin TFLED at the p-i interface. The obtained brightness of this QWI TFLED is 256 cd/m2 at an injection current density of 800 mA/cm2, which is about three orders of magnitude higher than the brightness of an a-SiC:H pin TFLED. Also, a comparatively lower EL threshold voltage of 6 V was observed for this a-SiC:H QWI TFLED.