Optical and surface properties of LiFePO<inf>4</inf> thin films prepared by RF magnetron sputtering
Küçük Resim Yok
Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer New York LLC
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
LiFePO<inf>4</inf> thin films with thickness values of 65 nm and 70 nm were deposited onto glass substrates by RF magnetron sputtering, using a LiFePO<inf>4</inf> target in the argon atmosphere. A comprehensive study of the optical properties was performed and the dispersions of the constants were determined. The transmittance and absorbance spectra were measured in the wavelength range of 400-1000 nm. The films showed optical transmittance over 90% in the visible range. The optical band gap value of the films was evaluated as 3 eV. The refractive index value of the films is 1.63 at ? = 550 nm. AFM micrographs indicate smooth surface with low values ofroot mean square roughness. Contact angle measurements of several testing liquids were used to characterize each sample in terms of wettability. The films are hydrophilic as observed from contact angle measurements. The surface free energy of the film surfaces and their components (dispersive and polar) were calculated from the contact angle data using the different theories available in the literature. © 2015 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.
Açıklama
Anahtar Kelimeler
Clusters and Nanostructures, Clusters and Nanostructures
Kaynak
European Physical Journal D
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
69
Sayı
3
