Infrared light-emitting diodes based on GaInAsSb solid solutions grown from lead-containing solution-melts

Light-emitting diodes (LEDs) were fabricated on the basis of GaInAsSb alloys grown from lead-containing solution-melts. Electroluminescence characteristics and their current and temperature dependences were studied. The external photon yield at room temperature was 1.6 and 0.11% for LEDs with emission wavelengths λ=2.3 and 2.44 µm, respectively. For LEDs with emission wavelength λ=2.3 µm, the average emission power P=0.94 mW was attained in the quasi-continuous mode at room temperature. In the pulsed mode, the peak radiation power was P=126 mW at a current of 3 A, a pulse duration of 0.125 µs, and a frequency of 512 Hz.