Visnyk of the Lviv University. Series Physics
57 (2020) ρ. 56-64
DOI: https://doi.org/10.30970/vph.57.2020.56 Effect of Dopant Concentration and Crystalline Structure on Absorption Edge of ZnO:Co FilmsB. Turko, L. Toporovska, Y. Eliyashevskyi, V. Kapustianyk, U. Mostovoy, Y. Kulyk, M. Rudko |
We have studied the crystalline structure and absorption spectra for zinc oxide films with different levels of doping with cobalt, deposited by high-frequency magnetron sputtering on the glass substrates. We estimated the concentration of the free charge carriers and showed that the shift of the fundamental absorption edge in ZnO:Co films with dopant level increasing is explained by the BursteinMoss effect.