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1 article(s) from Smolková, Katarína

Silica-coated upconversion lanthanide nanoparticles: The effect of crystal design on morphology, structure and optical properties

Uliana Kostiv,
Miroslav Šlouf,
Hana Macková,
Alexander Zhigunov,
Hana Engstová,
Katarína Smolková,
Petr Ježek and
Daniel Horák

Beilstein J. Nanotechnol. 2015, 6, 2290–2299, doi:10.3762/bjnano.6.235

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Figure 1: TEM micrographs of OM-NaYF₄:Yb³⁺/Er³⁺ nanoparticles prepared at (a) 250, (b) 300 and (c) 350 °C for...

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Figure 2: Particle size distribution of no. 4 OM-NaYF₄:Yb³⁺/Er³⁺ nanoparticles (Table 1) determined by DLS.

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Figure 3: X-ray diffraction patterns of OM-NaYF₄:Yb³⁺/Er³⁺: effect of (a) reaction temperature (time 1 h) and...

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Figure 4: TEM analysis: (a) ED pattern, (b) comparison of experimental ED pattern and calculated XRD pattern,...

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Figure 5: TEM analysis: (a) ED pattern, (b) comparison of experimental ED pattern and calculated XRD pattern,...

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Figure 6: TGA of OM–NaYF₄:Yb³⁺/Er³⁺ nanoparticles prepared at (a) different reaction temperatures for 1 h and...

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Figure 7: NIR-to-vis upconversion emission spectra of OM–NaYF₄:Yb³⁺/Er³⁺ nanoparticles excited at 980 nm with...

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Figure 8: Energy-level diagram of Yb³⁺/Er³⁺ and the upconversion mechanism at 980 nm excitation. The doted an...

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Figure 9: TEM micrograph of NaYF₄:Yb³⁺/Er³⁺&SiO₂ nanoparticles. Inset: C – particle core and S – SiO₂ shell.

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Figure 10: ATR FTIR spectra of OM–NaYF₄:Yb³⁺/Er³⁺ and NaYF₄:Yb³⁺/Er³⁺&SiO₂ nanoparticles.

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Published 03 Dec 2015

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