252
STUDY OF THE ELECTRONIC STRUCTUREOF THE
𝑴𝒐𝑶
𝟑
/
𝑴𝑶 NANOFILMS.
G.X. Allayarova, D.A. Tashmukhamedova, B.E.Umirzakov.
Tashkent State Technical University named after Islam Karimov.
100095 Tashkent,Uzbekistan.e-mail:
ftmet@mail.ru
𝑀𝑜𝑂
3
nanofilm is widely used in various fields of electrical engineering. For example, new types
of displays, light filters, sensors, photo converters and organic solar elements. It was formed by thermal
oxidation of
𝑀𝑜𝑂
3
nanoparticle and by ion implantation methods. Currently, the optical, emission and
electrophysical properties of the Mooxide film are widely studied to vary with photons electrons and
ions. However, to date there is no complete information on the composition, morphology, crystal and
electron structure and physical properties of molybdenum oxide nanoparticles formed on the surface
of
𝑀𝑜. In this work, we investigated the composition of the 𝑀𝑜𝑂
3
nanofilms, the energy zone
parameters, and the density of valence electrons by implanting oxygen ions.
As a target we received single crystalline
𝑀𝑜 (111) with a diameter of 10 mm and a thickness of
0.3 mm.Before ion implantation, we heated the target at vacuum (
𝑃 = 10
−6
𝑃𝑎)𝑇 = 2000 𝐾 for 25-
30 hand heated the pulse
𝑇 = 2200𝐾. Apply oxygen vacuum chamber to 𝑃 = 10
−2
𝑃𝑎 Pa in special
gas bubble. We change the ion energy at
1 − 5𝑘𝑒𝑉 and the dose at 4 − 8 ∙ 10
17
𝑠𝑚.In order to
improve the stoichiometric composition of the
𝑀𝑜𝑂
3
nanoparticle, we heat it at
𝑇 = 850 𝐾 during
ion implantation because this temperature is the optimum temperature and allows uniform thin films
on the surface.During ion implantation, we made films of different thicknesses, such as
30Å, 60Å, and
90Å thickness. The composition, electron structure and physical properties of nanoplanes were studied
by means of Oje - electron spectroscopy, electron spectroscopy, which lost characteristic of
photoelectron spectroscopy.As shown in Figure 1, the depth distribution of oxygen atoms on the
𝑀𝑜𝑂
3
/ 𝑀𝑜 nanofilm by ion implantation and thermal oxidation is obtained.
The stoichiometric composition of the nanofilm obtained during thermal oxidation is slightly
homogeneous, with a transition layer width of
65 − 70 Å. The content of the 𝑀𝑜𝑂
3
nanoparticle
obtained by ion implantation remained unchanged at
60 Å and the width of the transition layer did not
exceed
40 − 45 Å
Figure 1. Depth of oxygen atom on
𝑀𝑜𝑂
3
/
𝑀𝑜 nanofilm by ion implantation (curve 1) and thermal
oxidation (curve 2).
The energy parameters of the
𝑀𝑜𝑂
3
zones were calculated using the energy distribution methods
of secondary electron coefficients of photoelectron spectroscopy. Figure 2 shows their
(𝐸𝑝) and 𝛿
(𝐸𝑝) bond graphs for 𝑀𝑜𝑂
3
nanoparticles 𝑑 = 60 Å thick.Where 𝑅 is the coefficient of the
electronically rotating electrons
𝛿- coefficient the true secondary electrons.
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