The new, simple low-voltage cathodoluminescece set-up was designed and plotted. The set-up was designed on the base
of field emission light emitting device with carbon nanotube (CNT) cold cathode and anode covered by layer of
nancrystalline phosphor. The concept of set-up allowed for measuring of emissive properties of even 8 different samples
in a very short time. The samples are placed in the vacuum chamber and the luminescent spectra are recorded using
outside placed fiber spectrophotometer. The pressure in the set-up is controlled by vacuum sensor. The opportunities and
application of presented conception of set-up will be discussed.
The europium-doped tin dioxide nanopowders were synthesized using modified Pechini method. The samples with
different Eu<sup>3+</sup> concentration were sintered at different temperatures. In order to determination of structure and
morphology of obtained powders X-ray diffraction (XRD) measurement and transmission electron microscopy (TEM)
investigation were carried out. Photoluminescence of obtained powders were measured. Intensity of emission was
compared using (blue ZnS:Ag) reference peak method. After that mixed powders were deposited on ITO-glass slide. The
cathodoluminescence of obtained layers was also measured and compared. The properties and the potential application
of obtained nanopowders will be discussed.
The europium-doped tin dioxide nanopowders co-doped with Mg<sup>2+</sup> and Li<sup>+</sup> ions were synthesized using modified
Pechini method. In order to determination of structure and morphology of obtained powders the X-ray diffraction (XRD)
measurement were carried out. The photoluminescence of obtained powders were measured. Intensity of emission was
compared using blue ZnS:Ag reference peak method. The intensity of emission of samples with different Mg<sup>2+</sup>, Li<sup>+</sup>
concentration and pure Eu<sup>3+</sup>:SnO<sub>2</sub> were compared. After that mixed powders were deposited on ITO-glass slide. The
cathodoluminescence of obtained layers were also measured and compared. In the same time, slurries with obtained
nanoparticles were carried out. The layers consisted obtained nanopowders were fabricated from prepared slurries using
<i>spin-coating</i> method. The electrical properties of obtained layers measured and compared. The influence of co-doping,
properties and the potential application of obtained nanopowders will be discussed.obtained layers measured and compared. The influence of co-doping, properties and the potential application of obtained nanopowders will be discussed.
The terbium-doped yttrium aluminum garnet nanoparticles were synthesized by the modified Pechini method. In order
to determination of the structure and the morphology of obtained nanocrystallites the XRD and TEM analysis were
carried out. Next, to the ITO nanocrystallites-based slurries Tb:YAG nanoparticles were added. On the base of prepared
colloidal suspension the layers were fabricated by the spin-coating method. The resistivity, an optical transmission and
the luminescent properties of obtained layers were registered and compared. The influence of fabrication conditions on
optical and electrical properties of obtained layers and their potential application will be discussed in this work.
The Eu<sup>3+</sup>-doped Y<sub>2</sub>O<sub>3</sub>-particles of size 3.5 μm were coated with a layer of indium tin oxide precursor (ITO) and cured
at 120oC. The coating process was repeated four times. Finally, samples were annealed at 700 °C to form a cubic
structure of ITO. The morphology and structure of obtained ITO- Eu:Y<sub>2</sub>O<sub>3</sub> core-shells materials were determined by the
X-ray diffraction (XRD), transmission electro-microscopy (TEM) and scanning electron-microscopy (SEM) analyses. In
order to comparison of emissive properties, obtained was mixed with micrograins of ZnS:Ag in the same mass ratio. The
photo- and cathodoluminescent spectra of obtained structures materials were determined and analyzed. The possible
applications are discussed.
The indium tin oxide (ITO) is one of the most popular transparent conductive oxide (TCO). The process of fabrication of
ITO nanocrystallites has been described in our previous work. In present work the ITO layers were deposited on glass
substrates by spin-coating method.. For some solutions ITO, SnO<sub>2</sub> and In<sub>2</sub>O<sub>3</sub> nanocrystals were added. All those
nanocrystals were synthesized by modified Pechini method. Optical and electrical properties of the layers were measured,
compared and discussed.
The synthesis of europium doped tin oxide, indium oxide and indium tin oxide (ITO) is described. The structure and
morphology of mentioned above powders were determined by X-ray diffraction (XRD) and transmission electron
microscopy (TEM). The layers with nanocrystalline powders have been fabricated using <i>spin-coating</i> method. The
optical and electrical properties of obtained layers have been characterized. The influence of composition on electrical
and optical properties was discussed.
In this work we report a new carbon nanotubes field emission (CNT-FED) light source with nanocrystalline phosphors.
The nanocrystalline powders of cerium doped yttrium aluminum garnet were obtained by modified Pechini method. The
phosphor has been electrophoretically deposited on ITO-glass substrates. The cathode composed of carbon nanotubes
was fabricated in the same manner. A light source was assembled and tested. Low-voltage cathodoluminescent spectra
and <i>I-V</i> characteristics of fabricated cathodes were measured. A possibility of application of Ce doped nanocrystalline
YAG phosphor in the field emission displays (FEDs) was discussed.