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Bandgap engineering by tuning particle size and crystallinity of nanocrystalline composite thin films
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10.1063/1.3042163
/content/aip/journal/apl/93/23/10.1063/1.3042163
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/23/10.1063/1.3042163
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Figures

Image of FIG. 1.
FIG. 1.

(a) XRD of ( to 1) thin films. The reflections for correspond to pure . reflections are shown for and 0. (b) Raman spectra of ( to 1) thin films. The Raman modes for and are shown for and respectively. * marked peaks are due to sapphire substrate.

Image of FIG. 2.
FIG. 2.

TEM images of for (a) , (b) , (c) , and (d) . Insets: HRTEM images of (a) one crystallite. (b) (100) oriented nanoparticle coated with . (c) and (100) oriented and nanocrystallites, respectively, are shown from regions marked with circle. (d) crystallite with poor crystalline coating is shown.

Image of FIG. 3.
FIG. 3.

(a) vs energy plots. (b) The bandgap vs particle size of tailored by changing the composition of (red circles) and by annealing sample from 600 to (blue squares). The theoretical fit for the bandgap change due to confinement effect in (see text for details). The error bars for the particle size represents the distribution in the size of the particles.

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/content/aip/journal/apl/93/23/10.1063/1.3042163
2008-12-11
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Bandgap engineering by tuning particle size and crystallinity of SnO2–Fe2O3 nanocrystalline composite thin films
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/23/10.1063/1.3042163
10.1063/1.3042163
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