improved electrochromical properties of sol–gel wo3 thin films by doping
improved electrochromical properties of sol–gel wo3 thin films by doping
... Improved electrochromical properties of sol–gel WO
3
thin films by doping
gold nanocrystals
N. Naseri
a
, R. Azimirad
b
, O. Akhavan
a
, A.Z. Moshfegh
a,c,
⁎
a
Department of Physics, ... films
Optical properties
Electrochromic properties
Coloration time
In this investigation, the effect of gold nanocrystals on the electrochromical properties of sol –gel Au doped
WO...
sensor response of sol–gel multiwalled carbon nanotubes-tio2 composites
... 2
Behaviour-type, sensor response, and times of adsorption/desorption of screen-
printed and dip-coated films sensing a flux of 150 mL of N
2
with a charge of 1%
NH
3
.
Material Behavior-type SR (%) ... mass increment suggests further oxidation of Ti
3+/2+
states, in accordance with previous XPS studies of sol–gel TiO
2
thin films where the abundance of Ti
3+
and Ti
2+
was ob...
HÓA HỌC THỰC PHẨM (FPI)
... determined by Micro-Kjeldahl method.
Determination of moisture content by standard AOAC.
Determination of ash content by standard AOAC
Determination of foaming possibility by method Tsumuraa ... economic efficiency for producers and reducing the amount
of by- products cause environmental pollution. After hydrolysis of these by- products by enzyme
Alcalase 2.4L,...
Báo cáo " Growth of CdS thin films by chemical bath deposition technique " pptx
... preparation of large
area thin films [8]. In this study, we report the preparation of CdS thin films onto microscope glass
slides by CBD method. The structural, morphological and optical properties of ...
Fig. 1. Typical X-ray diffractogram of CdS thin films as grown. Inset shows XRD
pattern of the CdS thin films reported in [9].
B.X. Hop et al. / VNU Journa...
phase transformations in wo3 thin films during annealing
... observed during annealing of WO thin films.
3
The thin films were obtained by evaporation under
vacuum of WO powder and deposition on a (0001)
3
Al O substrate. The as-deposited films are so-called
23
amorphous, ... evaporation of WO powder
w
7,11
x
,
3
chemical vapour deposition
w
12
x
or reactive sputtering
of metallic tungsten by ArqO plasma
w
8,13–15
x
. The
2
degree...
wo3 thin film sensor prepared by sol–gel technique and its low-temperature sensing properties to trimethylamine
... aims of this work are to prepare WO
3
thin films
via a sol–gel process, using WCl
6
as a precursor and test
the sensing properties of thin films to TMA gas at the low
operating temperature of 70
◦
C.
2. ... incompatible
with the industrial technology of integrated circuits.
Such problems can be overcome by thin films [4,5]. The
thin film sensors can be fabricated by a numb...
comparison of single and binary oxide moo3, tio2 and wo3 sol – gel gas sensors
... been used in the ®eld of catalysis
for oxidation reactions of hydrocarbons [7]. MoO
3
has a
bandgap of 3.2 eV and electrical resistivity at room tem-
perature is of the order of 10
10
O cm.
Multi-metal ... a response of 2.3 and a time response of 60 s
to 1 ppm of NO
2
as shown in Fig. 5.
4.5. Ethanol vapor sensing
The sensors where exposed to 100±600 ppm of ethanol
and to 10...
sensitivity properties of a novel no2 gas sensor based on mesoporous wo3 thin film
... NO
2
sensitivity of
WO
3
thin film gas sensors. Part 1. Thin film devices, sensors and
actuators, Thin Solid Films 287 (1996) 258–265.
[7] V. Demarne, A. Grisel, An integrated low-power thin film CO ... process of NO
2
molecules because of the cap-
illary pore and large surface area. This implies the conclu-
sion that this type of film will offer a good sensitivity to
NO
2
gas....
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