Size-effects on the optical properties of zirconium oxide thin films

Ramana, C. V.; Vemuri, R. S.; Fernandez, I.; Campbell, A. L.

doi:doi:10.1063/1.3271697

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Improving microstructural quality of semipolar (112) GaN on m-plane sapphire by a two-step growth process

This letter reports a two-step growth process for improving microstructural quality of semipolar (112) GaN on nitridized m-plane sapphire. The two-step growth of (112) GaN, islanding growth under high pressure followed by islands coalescence under low pressure, went through a roughening-recovery process, which was found very effective in reducing the density of stacking faults and dislocations in (112) GaN. The x-ray rocking curves of both on-axis and off-axis planes were narrowed down by more ...

First-principles studies of the effect of oxygen vacancies on the electronic structure and linear optical response of multiferroic BiFeO₃

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Zirconium oxide (ZrO₂) thin films with an average crystallite-size (L) ranging from 5 to 25 nm were grown by sputter deposition onto optical grade quartz substrates. The optical properties of grown ZrO₂ films were evaluated using optical transmission and reflectance spectroscopic measurements. The size-effects were significant on the optical characteristics of ZrO₂ films. The bandgap energy (E_g) was found to increase from 5.78 to 6.07 eV with decreasing L values from 20 to 7 nm. A direct, linear inverse L-E_g relationship found for ZrO₂ films suggest that tuning optical properties for desired applications can be achieved by controlling the size.

ERRATA AND EDITORIALLY RELATED

Comment on “Size-effects on the optical properties of zirconium oxide thin films” [Appl. Phys. Lett. 95, 231905 (2009)]
Carolyn Rubin Aita et al.
Appl. Phys. Lett. 98, 256101 (2011)APPLAB000098000025256101000001

Erratum

Erratum: “Size effects on the optical properties of zirconium oxide thin films” [Appl. Phys. Lett. 95, 231905 (2009)]
C. V. Ramana et al.
Appl. Phys. Lett. 98, 169902 (2011)APPLAB000098000016169902000001

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KEYWORDS and PACS

Keywords

crystallites, energy gap, infrared spectra, light transmission, nanofabrication, nanostructured materials, reflectivity, size effect, spectrophotometry, sputter deposition, thin films, ultraviolet spectra, visible spectra, zirconium compounds

PACS

78.66.Db

Elemental semiconductors and insulators
78.67.-n

Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
81.16.-c

Methods of micro- and nanofabrication and processing
81.15.Cd

Deposition by sputtering
78.20.Ci

Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)
73.22.-f

Electronic structure of nanoscale materials and related systems

ARTICLE DATA

Digital Object Identifier

http://dx.doi.org/10.1063/1.3271697

PUBLICATION DATA

ISSN

0003-6951 (print)

1077-3118 (online)

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$abstract.society.value is a Member of CrossRef

American Institute of Physics

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