• L.Raja Mohan Reddy

In recent years dilute magnetic semiconductors have paid much attention due to their complementary properties of semiconductors and ferromagnetic behavior. There are many techniques used to deposit high-quality ZnO thin films. One of these based on chemical method for the production of ZnO thin films is the Sol-Gel. ZnO:Mn nano films doped with different manganese concentrations were deposited on glass substrates by the spin-coating method. The precursors for the synthesis of ZnO:Mn are: Zinc acetate dehydrate, manganese acetate tetrahydrate, 2-mithoxyethanol and monoethanolamine as zinc and manganese source, solvent and stabilizer respectively. Characterization techniques of XPS and UV-Vis-NIR measurements were done to investigate the effect of doping concentration on the composition and optical properties of ZnO:Mn nano films. X-ray photoelectron spectroscopy (XPS) pattern suggest that Mn2+ ions were successfully incorporated into the lattice position of Zn2+ ions in ZnO lattice. The optical absorption studies revealed that the energy band gap of the films followed the Vegard’s law. The optical band gap of the Mn-substituted ZnO samples increases with increase in doping concentration of manganese. Room temperature photoluminenescence is observed for the Mn doped ZnO thin films. The electrical resistivity of ZnO films varied with Mn-doping.

Zinc oxide, Sol-gel, Spintronics, DMS and Optical band gap

"COMPOSITION, OPTICAL AND PL PROPERTIES OF Mn DOPED ZnO NANO CRYSTALLINE THIN FILMS PREPARED BY SOL-GEL METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.400-403, May-2019, Available :http://www.jetir.org/papers/JETIR1905064.pdf

"COMPOSITION, OPTICAL AND PL PROPERTIES OF Mn DOPED ZnO NANO CRYSTALLINE THIN FILMS PREPARED BY SOL-GEL METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp400-403, May-2019, Available at : http://www.jetir.org/papers/JETIR1905064.pdf