Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/61326
Título: | Influence of Al/Si atomic ratio on optical and electrical properties of magnetron sputtered Al1-xSixOy coatings |
Autor(es): | Costa, Pedro Miguel Pinto Al-Rjoub, A. Rebouta, L. Manninen, Nora Kristiina Alves Sousa Alves, D. Almeida, B. G. Barradas, N. P. Alves, E. |
Palavras-chave: | Sputtered Al1-xSixOy Optical properties Dielectric properties Electrical conductivity Sputtering Aluminum silicon oxide |
Data: | 2019 |
Editora: | Elsevier B.V. |
Revista: | Thin Solid Films |
Citação: | Thin Solid Films 669 (2019) 475–481 |
Resumo(s): | This work presents a study on the influence of the Al/Si atomic ratio in dc magnetron sputtered Al1-xSixOy amorphous and transparent films upon their chemical composition, films' structure, optical and electrical properties. Increasing silicon in Al1-xSixOy films, from 0 at.% up to 31.1 at.%, caused an increment of deposition rate and an increment in Al-O-Si energy bonds as confirmed by X-Ray Photoelectron Spectroscopy (XPS) analysis. On other hand, the optical constants (refractive index (n) and extinction coefficient (k)), dielectric constant, loss tangent (tan δ) and ac conductivity (σac) decrease when the amount of silicon in films increased. The results show that the refractive index shows small variations from linearity with vol% of Al2O3 (or SiO2). Dielectric constant and dielectric loss evidenced two dipolar contributions, attributed to defects located one at or near the substrate/oxide interface, and the other in the bulk of the oxide |
Tipo: | Artigo |
Descrição: | "Available online 22 November 2018" |
URI: | https://hdl.handle.net/1822/61326 |
DOI: | 10.1016/j.tsf.2018.11.036 |
ISSN: | 0040-6090 |
Versão da editora: | www.elsevier.com/locate/tsf |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Thin Solid Films 669_2019_475–481_Influence of Al-Si atomic ratio on optical and electrical properties of magnetron sputtered Al1-xSixOy coatings.pdf | 550,68 kB | Adobe PDF | Ver/Abrir |