Type II recombination and band offset determination in a tensile strained InGaAs quantum well

Abstract
Photoluminescencemeasurements under different excitation powers and time-resolved photoluminescence experiments were carried out at low temperature on tensile strained In 0.3 Ga 0.7 As quantum wells with InGaAs barriers lattice matched to InP. Evidence of a type II recombination is found between carriers confined in the tensile strained layer and in the lattice matched one. This study allows us to propose a precise determination of the light holes band offset in the In 0.3 Ga 0.7 As/In 0.53 Ga 0.47 As system.