EN
The zinc selenide and copper selenide thin films were deposited by chemical deposition technique on glass substrates. For both films, sodium selenosulphate was used as a selenide ion source in an alkaline solution. The X-ray diffraction patterns show that the ZnSe has a cubic structure and Cu_3Se_2 film has a tetragonal structure. The relative intensity K_ β / K_ α of zinc and copper selenide thin films has been measured by using a ^{241}Am radioisotope source (75 mCi). The obtained results were compared with the theoretical values.