Uniaxial compression influence on electroluminescence spectra in p-AlxGa1-xAs/GaAs1-yPy/n-AlxGa1-xAs heterostructures.

We present new results on the influence of uniaxial stress up to P=400 MPa along [110] direction on the electroluminescence (EL) spectra of p-AlxGa1-xAs/GaAs1-yPy/n-AlxGa1-xAs double heterostructures. With increasing stress, the emission spectra demonstrate a blue shift of up to 20 meV at a pressure of P=400 MPa, while the EL intensity increases under compression. The results are discussed in terms of changes in the band structure under uniaxial compression. [ABSTRACT FROM AUTHOR]