Confined excitons in Si/SrTiO3 quantum wells
We propose Si/SrTiO3 single quantum well (SQWs) structures for silicon-based optoelectronic device applications. They are modeled according to experimental and theoretical data recently published. By assuming quantum confinement of carrier's, electronlight hole exciton and electronheavy hole exciton based luminescence, the calculations show the possibility of Si/SrTiO3 SQWs structures to emit light in the 1.001.20 ?m wavelength range. Considering the existence of smooth interfaces up to 15 thick, we have demonstrated that shifts on the excitons energies as strong as 50meV can be attained in the case of thin (?40) silicon wells.
single quantum well luminescence exciton energy