Photoluminescence of MgO thin films on Si (111) substrate, prepared by sol-gel method

Here we present the results of the measurements of photoluminescence properties of thin films of MgO (magnesium oxide) on Si substrate (mono-crystalline (111) silicon). The samples were prepared by the sol-gel method that is very simple method for fabrication metal oxide layers on different kind of substrates. We carried out the photoluminescence experiments at a wide range of temperatures from 10 to 300 K. We summarize how shape complexity of registered spectra depends on the temperature and the preparation conditions.