Abstract

ZnSe-based II-VI laser diodes were grown by using molecular beam epitaxy (MBE) on GaAs(1 0 0) substrates. Continuous-wave, stimulated emission at room temperature was observed at a wavelength of 536.5 nm with a threshold current of 45 mA (642 A/cm 2 ) from a ZnCdSe/ZnSSe/ZnMgSSe single quantum well separate confinement heterostructure laser diode. A lifetime of 11 s was achieved when the defect density of laser diode structure was less than 10 5 cm -2 . Electroluminescence tests were conducted to find the origin of the defect generation at the laser diode structure. We monitored the generation of the dark line defects along during the electroluminescence.

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