Dang, Chien, Dam Le, Tam Nguyen, and Dung Dang. “Characteristics and Optical Properties of Fe3+ Doped SiO2/TiO2 Thin Films Prepared by the Sol-Gel Dip-Coating Method”. Science and Technology Development Journal 16, no. 1 (March 31, 2013): 92-100. Accessed May 8, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/1424.