X-ray diffraction analysis of quantum-size ZnMgSSe/ZnSe/ZnMgSSe nanostructures

Quantum-size ZnMgSSe/ZnSe/ZnMgSSe nanostructures were studied by X-ray diffraction analysis. It was found that the ZnMgSSe solid solution decomposes into two phases with close lattice parameters. As the lattice-parameter mismatch between zinc selenide and barrier layers increases, the decomposition is accompanied by simultaneous broadening of peaks of each phase. It was found that almost pure ZnSe grows in the first stages of metastable barrier layer growth, thus thickening the well (ZnSe).