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Influence of the interfacial chemical environment on the luminescence of nanoparticles
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10.1063/1.3273498
/content/aip/journal/jap/107/1/10.1063/1.3273498
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/1/10.1063/1.3273498
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Highly porous layer, (b) nanopowder, and (c) colloidal solution with dispersed nanoparticles.

Image of FIG. 2.
FIG. 2.

(a) TEM image of nanoparticles, (b) highly resolved TEM image of a single nanoparticle, and (c) size distribution diagram of the nanoparticles obtained from (a).

Image of FIG. 3.
FIG. 3.

TPD-MS profiles of porous for the ions: (a) with , , , and ; and (b) with , , , and .

Image of FIG. 4.
FIG. 4.

FTIR spectra (transmittance and diffuse reflectance) of palletized and ground samples.

Image of FIG. 5.
FIG. 5.

Schematic representation of (a) general surface chemistry of as-prepared nanoparticles and (b) surface charges of nanoparticles dispersed in polar liquids.

Image of FIG. 6.
FIG. 6.

(a) Used surfactants, (b) schematic representation of interaction between the surfactants and nanoparticles, (c) general views of the solutions containing nanoparticles and surfactants, and (d) Z-potential values of the solutions containing nanoparticles without and with surfactants.

Image of FIG. 7.
FIG. 7.

PL spectra of dry as-prepared and oxidized nanopowder compared to polycrystalline wafer.

Image of FIG. 8.
FIG. 8.

Normalized PL spectra of the as-prepared nanoparticles in solutions with different static dielectric constants: (a) dichloromethane , (b) ethanol , and (c) water .

Image of FIG. 9.
FIG. 9.

Schematic illustration of the band tail screening effect.

Image of FIG. 10.
FIG. 10.

(a) Absorption and (b) PL spectra of aqueous solutions containing nanoparticles without and with surfactants.

Image of FIG. 11.
FIG. 11.

Schematic representation of the influence of (a) negative surface charges, and (b) positive surface charges on photoinduced electronic transitions in nanoparticles. The arrows indicate possible channels for the photostimulated electronic transitions.

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/content/aip/journal/jap/107/1/10.1063/1.3273498
2010-01-04
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influence of the interfacial chemical environment on the luminescence of 3CSiC nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/1/10.1063/1.3273498
10.1063/1.3273498
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