Research Information System
Materiali in Tehnologije, vol.52, no.5, pp.667-672, 2018 (SCI-Expanded, Scopus)
In this study, for the deposition of CdS thin films, electrodeposition was employed and some of the depositions were carried out under a magnetic field. The effects of the magnetic field were investigated in detail. It was understood from the film thicknesses that the magnetic field reduced the reaction rate from 7.39 g/cm2s to 3.66 g/cm2s. X-Ray diffraction results showed that all the films were formed with a hexagonal structure. In addition, the crystallite sizes were calculated from these patterns and they varied between 35 nm and 15 nm, depending on the reaction rate. Ultraviolet-visible spectroscopy was used for estimating the energy band gap. The energy band gaps varied from 2.30 eV to 2.65 eV, depending on the reaction rates and, therefore, the magnetic field. When the scanning electron microscope images were examined, it was seen that the surfaces of the films that were obtained under the magnetic field were rougher. Avtorji so v tej študiji za izdelavo tankih CdS filmov (prevlek) uporabili električni nanos (depozicijo). V nekaterih primerih so v postopku uporabili tudi magnetno polje, katerega vpliv so natančno raziskali. Iz meritev debeline izdelanih prevlek so ugotovili, da magnetno polje zmanjša hitrost reakcije s the 7,39 g/cm2s na the 3,66 g/cm2s. Raziskave z rentgensko difrakcijo so pokazale, da imajo vse izdelane prevleke heksagonalno strukturo. Dodatno so iz uklonskih slik izračunali velikost kristalitov; ta se je gibala med 35 nm in 15 nm, odvisno od hitrosti reakcije. Za ocenitev energije prepovedanega valenčnega pasu so uporabili spektroskopijo v ultravijolični (UV) in vidni svetlobi. Le-ta se je gibala med 2,30 eV in 2,65 eV, odvisno od hitrosti reakcije oz. magnetnega polja. Z uporabo vrstičnega elektronskega mikroskopa (SEM) so ocenili hrapavost izdelanih prevlek. Ugotovili so, da so prevleke, izdelane v prisotnosti magnetnega polja, bolj grobe oziroma hrapave.