(Al)GaInP multiquantum well LEDs on GaAs and Ge

MOVPE growth of AlGaInP layers on GaAs and Ge have been demonstrated. The surface morphology of the epilayers was smooth under optimized growth conditions. The epilayers showed good PL intensity on both GaAs and Ge substrates. It has been observed that at room temperature the PL intensity drops in the first few seconds after excitation and attains a steady state. The Zn-doped AlGaInP did not show any signs of H-passivation. The MQW LEDs on both the substrates produced electroluminescence which increased with applied current. Results indicate the feasibility of AlGaInP LEDs on Ge.