Cost-effective titania layers over 100 nm thick – effect of annealing on the structural, morphological, and optical properties
Authors:
- Magdalena Zięba,
- Cuma Tyszkiewicz,
- Ewa Gondek,
- Katarzyna Wojtasik,
- Jacek Nizioł,
- Dominik Dorosz,
- Bartłomiej Starzyk,
- Patryk Szymczak,
- Wojciech Pakieła,
- Roman Rogoziński,
- Paweł Karasiński
Abstract
Titania dioxide (TiO2) layers were synthesized via the acid-catalysed sol-gel route using titania (IV) ethoxide, and then annealed at temperatures varying in the range of 150-700 °C. The research concerned the effect of annealing temperature on the structure of TiO2 layers, their surface morphology, and their optical properties. Further, X-ray diffractometry, and Raman spectroscopy were used to determine the structure of TiO2 layers. Scanning electron and atomic force microscopy were used to study the surface morphology of TiO2 layers. Transmittance, reflectance, absorption edge, and optical homogeneity were investigated by UV-VIS spectrophotometry, while the refractive index and thicknesses of TiO2 layers were measured using a monochromatic ellipsometer. Chromatic dispersion characteristics of the complex refractive index were determined using spectroscopic ellipsometry. Structural studies have shown that the TiO2 layers annealed at temperatures up to 300 °C are amorphous, while those annealed at temperatures exceeding 300 °C are polycrystalline containing only anatase nanocrystals with sizes increasing from 6 to 20 nm with the increase of the annealing temperature. Investigations on the surface morphology of TiO2 layers have shown that the surface roughness increases with the increase in annealing temperature. Spectrophotometric investigations have shown that TiO2 layers are homogeneous and the width of the indirect optical band gap varies with annealing temperature from 3.53 eV to 3.73 eV.
- Record ID
- CUTd8b7fcd6e8734634a398e6713e321644
- Publication categories
- ;
- Author
- Journal series
- Opto-electronics Review, ISSN 1230-3402, e-ISSN 1896-3757
- Issue year
- 2023
- Vol
- 31
- No
- 4
- Pages
- [1-10]
- Article number
- e147913
- Other elements of collation
- fot.; rys.; wykr.; Bibliografia (na s.) - 9-10; Bibliografia (liczba pozycji) - 57; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 31, Nr 4
- Keywords in English
- sol-gel, titania layer, dip-coating, surface roughness, optical properties
- ASJC Classification
- ;
- DOI
- DOI:10.24425/opelre.2023.147913 Opening in a new tab
- URL
- https://journals.pan.pl/opelre/144545 Opening in a new tab
- Related project
- Hybrydowe platformy czujnikowe zintegrowanych układów fotonicznych na bazie materiałów ceramicznych i polimerowych. . Project leader at PK: , ,
- Language
- eng (en) English
- License
- Score (nominal)
- 100
- Score source
- journalList
- Score
- Publication indicators
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTd8b7fcd6e8734634a398e6713e321644/
- URN
urn:pkr-prod:CUTd8b7fcd6e8734634a398e6713e321644
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.