Zięba, M.; Tyszkiewicz, C.; Opilski, Z.; Barczak, K.; Nizioł, J.; Gondek, E.; Karasiński, P. Nb₂O₅-Doped TiO₂ Film Synthesised via Sol-Gel Method – Technology and Optical Characterisation. Opto-Electron. Rev. 2026, 34, e158649.