Hemgun Y. Energy band gab and optical property of Fe-doped NiO nanostructures prepared by co-precipitation method. Cre.Sci. [Internet]. 2016 Apr. 21 [cited 2024 Apr. 20];8(1):149-54. Available from: https://ph01.tci-thaijo.org/index.php/snru_journal/article/view/55338