Szczegóły publikacji
Opis bibliograficzny
Evolution of surface properties of titanium oxide thin films / Katarzyna PŁACHETA, Anna KOT, Joanna BANAŚ-GAC, Marcin Zając, Marcin SIKORA, Marta RADECKA, Katarzyna ZAKRZEWSKA // Applied Surface Science ; ISSN 0169-4332 . — Tytuł poprz.: Applications of Surface Science. — 2023 — vol. 608 art. no. 155046, s. 1-15. — Bibliogr. s. 13-15, Abstr. — Publikacja dostępna online od: 2022-09-27
Autorzy (7)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 142813 |
|---|---|
| Data dodania do BaDAP | 2022-10-04 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.apsusc.2022.155046 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Applied Surface Science |
Abstract
Titanium oxide thin films were deposited by RF magnetron sputtering of Ti metallic target in flow-controlled O2+Ar atmosphere. Comprehensive investigation of crystallographic structure, phase composition, morphology and optical properties was performed by means of X-ray diffraction, X-ray reflectivity (XRR), scanning electron microscopy, optical spectrophotometry, and X-ray photoemission spectroscopy. It was found that as the O2/(O2+Ar) flow ratio increases, the microstructure of thin films changes from TiO, Ti2O3, to rutile TiO2, rutile-anatase mixture and, finally, to pure anatase. Special emphasis was given to soft X-ray absorption spectroscopy in surface-sensitive total electron yield mode, which provide simultaneous information on electronic occupancy and local atomic structure. Studies of titanium L23 edge revealed systematic changes in crystal field strength, increasing upon rutile formation and decreasing when anatase became the dominant phase in sputtered films. Diffuse reflectance and XRR were employed to investigate the light scattering effects related to the surface roughness. The highest value (5.3 nm) of XRR roughness was observed for pure rutile sample. Performance of films as photoanodes in photoelectrochemical cells was assessed by photocurrent vs. potential and time measurements. Results reveal that crystallized, stoichiometric films containing a mixture of anatase and rutile are promising photoanode materials for green hydrogen generation.
