Synthesis of N-CNT/TiO2 composites thin films: surface analysis and optoelectronic propertiesHamza Belkhanchi, Younes Ziat, Maryama Hammi, Charaf Laghlimi, Abdelaziz Moutcine, Anas Benyounes and Fouzia KzaiberE3S Web Conf., 183 (2020) 05002DOI: https://doi.org/10.1051/e3sconf/202018305002