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Quantum size effect in the photoluminescence properties of p-type semiconducting transparent CuAlO2 nanoparticles
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10.1063/1.4768933
/content/aip/journal/jap/112/11/10.1063/1.4768933
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/11/10.1063/1.4768933

Figures

Image of FIG. 1.
FIG. 1.

XRD pattern of (a) CuAlO2 powder pellet, (b) CuAlO2 nanoparticles deposited for 15 min.

Image of FIG. 2.
FIG. 2.

HRTEM micrographs of CuAlO2 nanoparticles deposited for (a) 5 min, (b) 10 min, and (c) 15 min. Insets show the FFT images, which correspond to the characteristic crystal planes of CuAlO2.

Image of FIG. 3.
FIG. 3.

PL spectra of CuAlO2 nanoparticles deposited for (a) 5 min, (b) 10 min, and (c) 15 min, respectively. Red curves are the corresponding Gaussian fitting.

Image of FIG. 4.
FIG. 4.

(a) Optical reflectance and transmittance spectra of CuAlO2 thin film deposited for 150 min. (b) Determination of the direct bandgap of the material.

Image of FIG. 5.
FIG. 5.

Spectral variations of (a) absorption coefficient, α, (b) refractive index, n, (c) extinction coefficient, k, and (d) dielectric constant, εr of CuAlO2.

Image of FIG. 6.
FIG. 6.

Comparison between the experimentally obtained bandgap enhancement values and that of theoretically calculated values.

Tables

Generic image for table
Table I.

Summary of deposition parameters.

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/content/aip/journal/jap/112/11/10.1063/1.4768933
2012-12-13
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quantum size effect in the photoluminescence properties of p-type semiconducting transparent CuAlO2 nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/11/10.1063/1.4768933
10.1063/1.4768933
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