Optical and structural properties of Fe2O3-ZnO composite thick films obtained by ultrasonic spray pyrolysis. Superficies y Vacio [Internet]. 2023 Nov. 23 [cited 2025 Apr. 24];36:231101. Available from: https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/2023_syv36_1-231101