Optical properties of sputtered Fe2O3 films

Optical properties of iron oxide (α-Fe2O3) thin films deposited by the reactive evaporation of iron

“…A similar trend was shown for sputtered [5] and sprayed [9] films. The variation of the refractive index with substrate temperature may be correlated with the density of the films.…”

“…Therefore, it has been investigated as a potential candidate for many optical applications, such as solar energy conversion, electrochromism, photocatalysis, interference filters, and photo-oxidation of water [1][2][3][4]. Hematite thin films have been prepared by a variety of techniques, including sputtering [2,5], sol-gel-deposition [6,7], spray pyrolysis [3,8,9], metalorganic deposition [10], electrodeposition [11], and pulsed laser deposition [12]. One of the simplest techniques for the preparation of ␣-Fe 2 O 3 thin films is reactive evaporation, which requires no more than evaporation of pure iron in an oxygen atmosphere [4].…”

“…In the case of the refractive index, such a relation constitutes the dispersion properties of the material. The dispersion relations were determined for ␣-Fe 2 O 3 thin films deposited by sputtering [5], sol-gel [6,7], and spray pyrolysis [9]. The optical properties of titanium-doped ␣-Fe 2 O 3 , deposited by pulsed laser deposition, were reported [12].…”

Structural, optical and electrical properties of undoped polycrystalline hematite thin films produced using filtered arc deposition

“…The peak in n values for the FAD α-Fe 2 O 3 films at around 550 nm is about 20% higher than that reported in Tanaka [42] and Longtin et al [43]. The refractive indices of radio frequency sputtered Fe 2 O 3 thin films produced by Mörl et al [46] are dependent on deposition temperature (n increases with increasing temperature) and are approximately 10% lower than our values at wavelengths greater than 500 nm. Different refractive index values in the literature for hematite may be attributed to differences in the composition and crystallinity, and uncertainties in the optical measurements.…”

Optical properties and electronic transitions of zinc oxide, ferric oxide, cerium oxide, and samarium oxide in the ultraviolet and extreme ultraviolet

“…[31,41] and n 2.9 from Ref. [44]. For peaks 1-4, we have chosen α i 0.2 as we previously did for semiconductors [16] and α i 0.02 for oscillators for the tightly bound electrons (peaks 5-7).…”