“Influence of Thermal Annealing to Material Properties of TiO2, ZnO, and TiO2 ZnO Bilayer Films by Sol-Gel Method”. Indian Journal of Pure & Applied Physics (IJPAP) 60, no. 3 (June 1, 2023): 218–226. Accessed May 14, 2026. https://or.niscpr.res.in/index.php/IJPAP/article/view/2259.