CORRELATION BETWEEN MORPHOLOGY, PHASE COMPOSITION, AND VIBRATIONAL PROPERTIES OF TiO2 THIN FILMS
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This study comprehensively analyzed the physicochemical properties of TiO₂ thin films using Raman and infrared (IR) spectroscopy. With increasing film thickness, the structural integrity of anatase and rutile phases improved, phonon resonance intensity increased, and surface chemical changes decreased. Raman spectroscopy effectively assessed crystallinity and morphological uniformity, while IR spectra revealed stretching and bending vibrations of Ti–O and Ti–O–Ti bonds. Mechanical stresses and chemical groups were detected in the 700–800 cm⁻¹ range. The results highlight the importance of film thickness and surface properties of TiO₂ for efficient photocatalytic and optoelectronic applications
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