Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing
Graphene oxide films were formed using the ultrasonic spray coating method and studied with micro-Raman spectroscopy, atomic force microscopy, and electrical dynamic response of resistance measurements. The effect of different gases (water vapor, ethanol, acetone, ammonia, and isopropyl) on the dyna...
Збережено в:
| Опубліковано в: : | Semiconductor Physics Quantum Electronics & Optoelectronics |
|---|---|
| Дата: | 2019 |
| Автори: | , , , , , , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2019
|
| Теми: | |
| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/215421 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing / O.M. Slobodian, Yu.S. Milovanov, V.A. Skryshevsky, A.V. Vasin, X. Tang, J.-P. Raskin, P.M. Lytvyn, K.V. Svezhentsova, S.V. Malyuta, A.N. Nazarov // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 1. — С. 98-103. — Бібліогр.: 20 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860479858548670464 |
|---|---|
| author | Slobodian, O.M. Milovanov, Yu.S. Skryshevsky, V.A. Vasin, A.V. Tang, X. Raskin, J.-P. Lytvyn, P.M. Svezhentsova, K.V. Malyuta, S.V. Nazarov, A.N. |
| author_facet | Slobodian, O.M. Milovanov, Yu.S. Skryshevsky, V.A. Vasin, A.V. Tang, X. Raskin, J.-P. Lytvyn, P.M. Svezhentsova, K.V. Malyuta, S.V. Nazarov, A.N. |
| citation_txt | Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing / O.M. Slobodian, Yu.S. Milovanov, V.A. Skryshevsky, A.V. Vasin, X. Tang, J.-P. Raskin, P.M. Lytvyn, K.V. Svezhentsova, S.V. Malyuta, A.N. Nazarov // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 1. — С. 98-103. — Бібліогр.: 20 назв. — англ. |
| collection | DSpace DC |
| container_title | Semiconductor Physics Quantum Electronics & Optoelectronics |
| description | Graphene oxide films were formed using the ultrasonic spray coating method and studied with micro-Raman spectroscopy, atomic force microscopy, and electrical dynamic response of resistance measurements. The effect of different gases (water vapor, ethanol, acetone, ammonia, and isopropyl) on the dynamic response of resistance of the Au / graphene oxide / Au structure has been studied. The dynamic response shows that adsorption of all the mentioned gases results in an increase in the resistance. For ethanol, acetone, and isopropyl, the adsorption and desorption cycles are almost identical. At the same time, in the case of water vapor and ammonia, the cycle of desorption is very weak, especially for the former, which attests to different mechanisms of adsorption/desorption processes regarding ethanol, acetone, and isopropyl. The mechanisms of the studied vapors' adsorption/desorption are proposed.
|
| first_indexed | 2026-03-23T18:50:57Z |
| format | Article |
| fulltext |
ISSN 1560-8034, 1605-6582 (On-line), SPQEO, 2019. V. 22, N 1. P. 98-103.
© 2019, V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine
98
Sensors
Reduced graphene oxide obtained using the spray pyrolysis technique
for gas sensing
O.M. Slobodian1*, Yu.S. Milovanov2, V.A. Skryshevsky2, A.V. Vasin1, X. Tang3, J.-P. Raskin3, P.M. Lytvyn1,
K.V. Svezhentsova1, S.V. Malyuta1, A.N. Nazarov1
1V. Lashkaryov Institute of Semiconductor Physics NAS of Ukraine, Kyiv, Ukraine
2Institute of High Technologies Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
3ICTEAM, Université catholique de Louvain (UCLouvain) Louvain-la-Neuve, Belgium
*Corresponding author e-mail: akapulko20@gmail.com
Abstract. Graphene oxide films were formed using the ultrasonic spray coating method
and studied with micro-Raman spectroscopy, atomic force microscopy, and electrical
dynamic response of resistance measurements. Effect of different gases (water vapor,
ethanol, acetone, ammonia, and isopropyl) on the dynamic response of resistance of the Au
/ graphene oxide / Au structure has been studied. The dynamic response shows that
adsorption of all mentioned gases results in increase of the resistance. For ethanol, acetone
and isopropyl adsorption and desorption cycles are almost identical. At the same time, in
the case of water vapor and ammonia the cycle of desorption is very week, especially for
the former, which attests different mechanisms of adsorption/desorption processes
regarding to ethanol, acetone and isopropyl. The mechanisms of studied vapors
adsorption/desorption are proposed.
Keywords: ultrasonic spray pyrolysis, graphene oxide, Raman spectroscopy, gas sensor.
doi: https://doi.org/10.15407/spqeo22.01.98
PACS 07.07.Df, 77.84.Bw, 78.30.Ly, 82.30.Lp
Manuscript received 14.02.19; revised version received 06.03.19; accepted for publication
27.03.19; published online 30.03.19.
1. Introduction
In recent years, the interest in nanostructured gas-sensing
materials, particularly in thin film form, has significantly
grown up. The devices based on them have good
response, wide operation temperature range and stable
selectivity. Moreover, sensors based on thin film
materials are essential for mass production technologies.
For industrial applications, a low cost method,
specifically an ultrasonic spray pyrolysis technique,
appears to be an excellent choice. The ultrasonic spray
pyrolysis method is based on formation of fine droplets
with size distribution in the range of a few micrometers.
Hence, the ultrasonic spray pyrolysis method could be
the best approach for deposition of uniform thin films.
At the same time, graphene and graphene-based
materials are considered as promising candidates for
advanced applications in future electronics [1-3] because
of their attractive physical and optical properties. It was
found that graphene oxide (GO) shows good sensing
properties towards H2O [4, 5], NO2 [6], NH3 [7], H2 [8]
and other gases and vapors.
However, graphene oxide changes its physical
properties strongly in dependence on type of reduction.
Well reduced graphene oxide (with a small number of
C-O and C-OH bonds) can be obtained at high-
temperature vacuum annealing [9] or low-temperature
chemical reduction [10]. Additionally, it was shown that
low-temperature annealing in air can result in appreciable
reduction of resistivity of the GO [11], which is
necessary for resistance sensing material. This method
for synthesizing reduced graphene oxide (rGO) is the
most simple and convenient one, but it is necessary to
check up its performance for obtaining the sensory
material.
In this work, we report GO-based sensors prepared
by ultrasonic spray pyrolysis technique. The nano-
structured GO is characterized by Raman spectroscopy
and atomic force microscopy. The sensor resistances are
measured by current-voltage characteristic in direct
current mode, and measurements of current at vapor/dry
air cyclic pumping (dynamic response) are performed.
The sensors are used to detect ethanol, acetone,
ammonia, isopropyl and water vapor.
SPQEO, 2019. V. 22, N 1. P. 98-103.
Slobodian O.M., Milovanov Yu.S., Skryshevsky V.A. et al. Reduced graphene oxide obtained using the spray …
99
2. Experimental
GO was synthesized using Hummers’ method [12] and
transformed into water solution. Evolution of chemical
composition of this material, after annealing, was
determined using XPS and FTIR spectroscopy, as
reported in [13]. The carbon/oxygen ratio of pristine GO
was found to be 2.31, which is in agreement with values
reported for similar oxidation processes [14, 15]. Then, an
aqueous solution of GO was deposited onto the substrate.
As shown in Fig. 1, the substrate is an Au interdigitated
electrode array (IDA) on SiO2/Si. Deposition (see Fig. 2)
was performed using the ultrasonic spray coating
technique with 120 kHz atomizer nozzle (Sono-Tek
Corp., USA), power level – 6 W, flow rate – 3 ml/h, for
5 min. The substrate was located on a heated table (80-
100 °C). To focalize the beam of drops, the focusing air
shroud was made and used. In this way, GO flakes are
immobilized on IDA after solvent evaporation [16]. To
obtain reduced GO film (rGO), the samples were
annealed at 230 °C for 15 min in ambient air.
Both measurements of current-voltage characteristic
in direct current mode and measurements of current at
vapor/dry air cyclic pumping (dynamic response) were
performed using Agilent 4156C semiconductor
parameter analyzer. The nano-relief and homogeneity of
GO film surfaces were analyzed using the FemtoScan
atomic force microscope (AFM) operating in the contact
mode (Fig. 1). The control of GO layer quality was
fulfilled by micro-Raman spectroscopy at room
temperature (triple Raman spectrometer T-64000 Horiba
Jobin-Yvon, equipped with electrically cooled CCD
detector, and excited by the 515-nm line of an Ar-Kr ion
laser).
3. Results and discussion
3.1. Structure and surface morphology of GO film
AFM surface topology of GO film onto glass substrate,
obtained with ultrasonic pyrolysis method, is presented in
Fig. 3. GO films were aggregated to form clusters with
the lateral sizes ranged from 500 nm up to several
micrometers and the minimum thickness of about 3 nm.
Fig. 2. Structural scheme of the ultrasonic pyrolysis system.
The root mean square (RMS) value of the GO height,
averaged over an operation area 8×8 µm2, equals to
5.4 nm. However, the local height of sharp thresholds
between plateaus and valleys can reach 10-15 nm. The
friction force map (Fig. 3b) illustrates a general
homogeneity of mechanical and phase properties over the
surface. At the same time, there is a local friction contrast
of opposite sign (dark/light). The dark contrast associated
with hole-like depressions in the relief (diameter
100…300 nm), where tip apex sticking and light contrast
revealed fibrillar features of surface (wire-like features of
10×100 nm and length 1-2 µm) with a small friction.
Probably, these fibrillar features are the multiple wrinkles
formed at GO flakes spraying.
Raman spectra of GO and rGO films are presented in
Fig. 4. Two typical peaks, with their maxima at ~1350
and ~1590 cm–1 (D and G bands, correspondingly) are
observed. Weak changes of ID/IG ratio from 0.92 to 0.91
could be associated with defect concentration growth
after thermal treatment [13, 17], at the same time an
oxidation degree remains significant [13].
3.2. Dynamic response of GO film resistance
The results of Raman measurements are confirmed by the
relatively high resistance of the samples (see Fig. 5).
Additionally, the current-voltage (I-V) characteristics of
the samples are non-linear for investigated range of
Fig. 1. Microscopic photo of Au electrodes (a) before, and (b) after spray deposition of GO film.
SPQEO, 2019. V. 22, N 1. P. 98-103.
Slobodian O.M., Milovanov Yu.S., Skryshevsky V.A. et al. Reduced graphene oxide obtained using the spray …
100
Fig. 4. Raman spectra of graphene oxide film before and after
reduction.
Fig. 5. I-V characteristic of a reduced graphene oxide film
device (see Fig. 1).
applied voltage that can be associated with Schottky
contact formation between Au and rGO.
Dynamic responses of the rGO film for ethanol,
acetone, isopropyl, ammonia and water vapor are
presented in Fig. 6. It can be seen all vapors under study
(Fig. 6a-6e) provide the resistance increase in the rGO
film. Additionally, the rGO film demonstrates the
resistance responses (∆R/R0), to isopropyl of about
4…5% (Fig. 6a), to ethanol about 5% (Fig. 6e), to
ammonia about 15…18% (Fig. 6c) and to water about
25…30% in the first adsorption cycle (Fig. 6d).
However, ∆R/R0 to acetone vapor is much lower, about
1…2% (Fig. 6b).
It should be noted that at room temperature
adsorption of most molecules (ethanol, isopropyl,
acetone, ammonia) do not reach saturation after 800 s,
and desorption starts to appear. However, water vapor is
in saturation at 200 s, and week desorption is observed
(Fig. 6d). These facts suggest the adsorption/desorption
difference between water and the molecules mentioned
above. Probably, incorporation of water molecules into
the interlayer regions of the multilayer rGO reduces
electrical contacts between rGO flakes, hereby,
increasing the resistance of the rGO film [18].
Desorption of interlayer water in GO film is observed at
temperatures about 100 °C [13].
The sensing mechanism for organic vapors, namely:
ethanol (C2H5OH), acetone ((CH3)2CO) and isopropyl
(C3H7OH), is a complex process. Adsorption of organic
vapors on rGO surface occurs through dissociation of the
organic molecules to H+ or OH– ions to form many
different intermediate states. The final reactions of
ethanol and acetone with adsorbed oxygen species can be
described in the following form [19]:
( ) ( ) −−
++→+ eadsads 6O3HCO2O6OHHC 2252 , (1)
( ) ( ) ( ) ( ) ( ) −−
++→+ eggadsads 8O3HCO3O8СOCH 2223 . (2)
Fig. 3. AFM height (a) and friction (b) maps of the GO thin film deposited onto glass substrate with ultrasonic pyrolysis
technique.
SPQEO, 2019. V. 22, N 1. P. 98-103.
Slobodian O.M., Milovanov Yu.S., Skryshevsky V.A. et al. Reduced graphene oxide obtained using the spray …
101
Using the approach described in [19], the final
reaction of isopropyl with adsorbed oxygen species can
be also described by the following reaction:
( ) ( ) ( ) ( ) −−
++→+ eggadsads 9O4HCO3O9OHHC 2273 . (3)
The similar approach can be used to explain
ammonia reaction on surface of rGO that contains
adsorbed oxygen [20]:
( ) ( ) ( ) ( ) −−
++→+ eggadsads 3O3HNO3NH 223 . (4)
The sensing mechanism of ethanol, acetone,
isopropyl and ammonia is based on the fact that electrons
from the chemical reactions mentioned above transfer to
the graphene, which results in hole depletion of p-type
graphene, thereby, increasing the resistance of the
graphene film. If we compare the chemical reactions (1)-
(4), we can conclude that for the reaction (4) we need
only three charged oxygen on the graphene surface
whereas for ethanol – six ones. That is, the reaction (4)
can performs faster than reactions (1)-(3). Indeed,
resistance sensitivity of rGO film to ammonia is
considerably higher than to ethanol and acetone.
4. Conclusions
The rGO films were formed using the ultrasonic spray
coating method with low-temperature (230 °C) annealing
in ambient atmosphere. It was shown that adsorption of
such gases as ethanol, acetone, isopropyl, ammonia and
water vapor results in increase of the resistance inherent
to the rGO film. The water vapors demonstrate the
highest sensitivity on the first step of adsorption, but a
small desorption effect is observed. It is suggested that
incorporation of water molecules into the interlayer
regions of the multilayer rGO reduces electrical contacts
between rGO flakes and increases of resistance of the
rGO film. At room temperature, the maximum sensitivity
for other studied gases is observed for ammonia which
reaches 18%.
Fig. 6. Time dependence of normalized current (for 1 V applied voltage) for rGO samples, measured under (a) isopropyl, (b)
acetone, (c) ammonia (d) water and (e) ethanol vapor.
SPQEO, 2019. V. 22, N 1. P. 98-103.
Slobodian O.M., Milovanov Yu.S., Skryshevsky V.A. et al. Reduced graphene oxide obtained using the spray …
102
Acknowledgements
The authors thank Dr. A. Nikolenko from laboratory of
Raman and Luminescence Submicron Spectroscopy (ISP
NASU) for performance of the mirco-Raman
measurements. Authors acknowledge the Ministry of
Education and Science of Ukraine (Project F2211) and
Ukrainian Scientific and Technology Centre (Project
№6362) for partial support.
References
1. Avouris P., Xia F. Graphene applications in electro-
nics and photonics. MRS Bullet. 2012. 37. P. 1225–
1234. https://doi.org/10.1557/mrs.2012.206.
2. Choi W., Lahiri I., Seelaboyina R., Kang Y.S.
Synthesis of graphene and its applications: A
review. Critical Reviews in Solid State and
Materials Sciences. 35 (2010) 52–71.
https://doi.org/10.1080/10408430903505036.
3. Kulkarni G.S., Reddy K., Zhong Z., Fan X.
Graphene nanoelectronic heterodyne sensor for
rapid and sensitive vapour detection. Nat Commun.
2014. 4376. P. 1–7; doi: 10.1038/ncomms5376.
4. Karim M.R., Hatakeyama K., Matsui T. et al.
Graphene oxide nanosheet with high proton
conductivity. J. Am. Chem. Soc. 2013. 135. P.
8097–8100; doi: 10.1021/ja401060q.
5. Xinglin Yu, Xiangdong Chen, Xing Ding. High-
sensitivity and low-hysteresis humidity sensor
based on hydrothermally reduced graphene
oxide/nanodiamond. Sensors and Actuators, B:
Chem. 2019. 283. P. 761–768;
doi: 10.1016/j.snb.2018.12.057.
6. Prezioso S., Perrozzi F., Giancaterini L., Cantalini
C., Treossi E., Palermo V., Nardone M., Santucci
S., Ottaviano L. Graphene oxide as practical
solution to high sensitivity gas sensing. J. Phys.
Chem. C. 2013. 117, No 20. P. 10683–10690; doi:
10.1021/jp3085759.
7. Hwang S., Lim J., Park H.G. et al. Chemical vapor
sensing properties of graphene based on geometrical
evaluation. Current Appl. Phys. 2012. 12. P. 1017–
1022. DOI: 10.1016/j.cap.2011.12.021.
8. Pandey P.A., Wilson N.R., Covington J.A. Pd-
doped reduced graphene oxide sensing films for H2
detection. Sensors and Actuators, B: Chem. 2013.
183. P. 478–487.
http://dx.doi.org/10.1016/j.snb.2013.03.089.
9. Wu Z.-S., Ren W., Gao L., Liu B., Jiang C., Cheng
H.-M. Synthesis of high-quality graphene with a
pre-determined number of layers. Carbon. 2009. 47.
P. 493–499. DOI: 10.1016/j.carbon.2008.10.031.
10. Stankovich S., Dikin D.A., Piner R.D. et al.
Synthesis of graphene-based nanosheets via
chemical reduction of exfoliated graphite oxide.
Carbon. 2007. 45. P. 1558–1565. DOI:
10.1016/j.carbon.2007.02.034.
11. Jung I., Dikin D.A., Piner R.D., Ruoff R.S.,
Tunable electrical conductivity of individual
graphene oxide sheets reduced at “low”
temperatures. Nano Lett., 2008. 8, No. 12. P. 4283-
4287. DOI:10.1021/nl8019938.
12. Hummers W.S., Offeman R.E. Preparation of
graphitic oxide. J. Am. Chem. Soc. 1958. 80, No 6.
P. 1339–1339. DOI: 10.1021/ja01539a017.
13. Slobodian O.M., Lytvyn P.M., Nikolenko A.S. et al.
Low-temperature reduction of graphene oxide:
electrical conductance and scanning Kelvin probe
force microscopy. Nanoscale Res. Lett. 2018. 13,
No 1. P. 139; doi: 10.1186/s11671-018-2536-z.
14. Yanga D., Velamakannia A., Bozoklu G. et al.
Chemical analysis of graphene oxide films after
heat and chemical treatments by X-ray
photoelectron and micro-Raman spectroscopy.
Carbon. 2009. 47. P. 145–152;
doi: 10.1016/j.carbon.2008.09.045.
15. Fu C., Zhao G., Zhang H., Li S. Evaluation and
characterization of reduced graphene oxide nano-
sheets as anode materials for lithium-ion batteries.
Int. J. Electrochem. Sci. 2013. 8, N5. P. 6269–6280.
16. Gilje S., Han S., Wang M., Wang K.L., and
Kaner R.B. A chemical route to graphene for device
applications. Nano Lett. 2007. 7, No 11. P. 3394–
33988. DOI: 10.1021/nl0717715.
17. Claramunt S., Varea A., Lopez-Diaz D. et al. The
importance of interbands on the interpretation of the
Raman spectrum of graphene oxide. J. Phys. Chem.
2015. 119, No 18. P. 10123−10129.
DOI: 10.1021/acs.jpcc.5b01590.
18. Naik G., Krishnaswamy S. Room-temperature
humidity sensing using graphene oxide thin films.
Graphene. 2016. 5. P. 1−13.
DOI: 10.4236/graphene.2016.51001.
19. Gautam M., Jayatissa A.H. Detection of organic
vapors by graphene films functionalized with
metallic nanoparticles. J. Appl. Phys. 2012. 112. P.
114326. https://doi.org/10.1063/1.4768724.
20. Gautam M., Jayatissa A.H. Ammonia gas sensing
behavior of graphene surface decorated with gold
nanoparticles. Solid-State Electron. 2012. 78. P. 159
–165. http://dx.doi.org/10.1016/j.sse.2012.05.059.
Authors and CV
Slobodian O.M., junior research
scientist of Department of the
Functional Materials and Nano-
structures at the V. Lashkaryov Insti-
tute of Semiconductor Physics. The
area of scientific interests includes
investigation of electrical and optical
properties of ultrathin carbon films.
Malyuta S.V. PhD student at the
Microelectronics department of
National Technical University of
Ukraine “Igor Sikorsky Kyiv
Polytechnic Institute”. The area of
scientific interests includes scanning
probe microscopy.
SPQEO, 2019. V. 22, N 1. P. 98-103.
Slobodian O.M., Milovanov Yu.S., Skryshevsky V.A. et al. Reduced graphene oxide obtained using the spray …
103
Yurii Milovanov completed his PhD
at Taras Shevchenko National
University of Kyiv in Ukraine in
2015. The subject of his research was
the investigation of electrical and
luminescent properties of porous
silicon and titanium oxide composite
structures. Currently his research
interests focus on the study of nanocomposite structures
for chemical gas sensors.
Valery Skryshevsky received his
Ph.D. degree in 1984, and his Doctor
of Science degree (Habilitation) in
2001 at Taras Shevchenko National
University of Kyiv. He is currently
professor and Head of Department of
Nanophysics of Condensed Matters at
Institute of High Technologies, Taras
Shevchenko National University of Kyiv. His main
scientific and research interests include micro- and nano-
technology, optoelectronics, solar cells, hydrogen energy,
chemical and bio-sensors, development of novel methods
of cell imaging using semiconductor nanoparticles.
Andrii Vasin received his Ph.D.
degree in 2000, and his Doctor of
Science degree (Habilitation, solid
state physics) in 2016 at V.
Lashkaryov Institute of Semiconduc-
tor Physics, NASU. He is currently
leading research fellow of the
department of Functional Materials
and Structures of V. Lashkaryov Insti-
tute of Semiconductor Physics. His main scientific and
research interests include the material science and
technology of the functional materials, primarily carbon
related nanocomposites and thin films.
Xiaohui Tang received the Ph.D.
degree in Applied Sciences from
Université Catholique de Louvain,
Belgium in 2001. From 1983 to 1984,
she was an assistant and worked at
Kunming University of Technology,
China. From 1988 to 1994, she joined
at Kunming Institute of Physics,
China, where she had been working
on II-VI compound semiconductor materials and devices.
She then was a free researcher at IMEC, Leuven, Belgium
in 1995. Presently, she is working at ICTEAM institute,
Université catholique de Louvain, Belgium as a Senior
Researcher. She has 128 publications in international
journals and conferences, five book chapters and five
patents. Her current interest is in fabrication and
characterization gas sensors and smart prototypes.
Jean-Pierre Raskin received the
M.S. and Ph.D. degrees in applied
sciences from Université catholique
de Louvain (UCLouvain), Louvain-la-
Neuve, Belgium, in 1994 and 1997,
respectively. He has been a Professor
at the Electrical Engineering Depart-
ment of UCLouvain since 2000. His
research interests are the modeling, wideband
characterization and fabrication of advanced SOI
MOSFETs as well as micro and nanofabrication of
MEMS/NEMS sensors and actuators, including the
extraction of intrinsic material properties at nanometer
scale. He has been IEEE Fellow since 2014. He was the
recipient of the Médaille BLONDEL 2015, the SOI
Consortium Award 2016 and the European SEMI Award
2017 in recognition in his vision and pioneering work for
RF SOI.
Lytvyn P.M. PhD in Physics and
Mathematics, Senior Researcher of
the Laboratory of Electron probe
methods of structural and elemental
analysis of semiconductor materials
and systems, V. Lashkaryov Institute
of Semiconductor Physics, NAS of
Ukraine. The area of scientific interests covers
nanophysics of semiconductors and related materials.
Svezhentsova K.V. PhD in Physics
and Mathematics, Senior Researcher
of the Department of Physics and
Technology of low-dimensional
systems, V. Lashkaryov Institute of
Semiconductor Physics, NASU. The
area of scientific interests includes
experimental study of the heterostructures properties
applied to detectors of IR and terahertz radiation.
Nazarov A.N. Doctor of Sciences in
Physics and Mathematics, Head of
Department of the Functional
Materials and Nanostructures at the
V. Lashkaryov Institute of Semi-
conductor Physics, NAS of Ukraine,
Professor of Department of General
Physics and Solid State Physics,
National Technical University of
Ukraine “Igor Sikorsky KPI”.
The area of his scientific interests includes physics,
technology and characterization of nanoscaled carbon
based materials and devices, SOI structures and devices,
radiation effects in carbon and silicon based materials,
structures and devices.
|
| id | nasplib_isofts_kiev_ua-123456789-215421 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1560-8034 |
| language | English |
| last_indexed | 2026-03-23T18:50:57Z |
| publishDate | 2019 |
| publisher | Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| record_format | dspace |
| spelling | Slobodian, O.M. Milovanov, Yu.S. Skryshevsky, V.A. Vasin, A.V. Tang, X. Raskin, J.-P. Lytvyn, P.M. Svezhentsova, K.V. Malyuta, S.V. Nazarov, A.N. 2026-03-16T10:58:33Z 2019 Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing / O.M. Slobodian, Yu.S. Milovanov, V.A. Skryshevsky, A.V. Vasin, X. Tang, J.-P. Raskin, P.M. Lytvyn, K.V. Svezhentsova, S.V. Malyuta, A.N. Nazarov // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 1. — С. 98-103. — Бібліогр.: 20 назв. — англ. 1560-8034 PACS: 07.07.Df, 77.84.Bw, 78.30.Ly, 82.30.Lp https://nasplib.isofts.kiev.ua/handle/123456789/215421 https://doi.org/10.15407/spqeo22.01.98 Graphene oxide films were formed using the ultrasonic spray coating method and studied with micro-Raman spectroscopy, atomic force microscopy, and electrical dynamic response of resistance measurements. The effect of different gases (water vapor, ethanol, acetone, ammonia, and isopropyl) on the dynamic response of resistance of the Au / graphene oxide / Au structure has been studied. The dynamic response shows that adsorption of all the mentioned gases results in an increase in the resistance. For ethanol, acetone, and isopropyl, the adsorption and desorption cycles are almost identical. At the same time, in the case of water vapor and ammonia, the cycle of desorption is very weak, especially for the former, which attests to different mechanisms of adsorption/desorption processes regarding ethanol, acetone, and isopropyl. The mechanisms of the studied vapors' adsorption/desorption are proposed. The authors thank Dr. A. Nikolenko from the laboratory of Raman and Luminescence Submicron Spectroscopy (ISP NASU) for performing the micro-Raman measurements. Authors acknowledge the Ministry of Education and Science of Ukraine (Project F2211) and Ukrainian Scientific and Technology Centre (Project №6362) for partial support. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics Sensors Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing Article published earlier |
| spellingShingle | Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing Slobodian, O.M. Milovanov, Yu.S. Skryshevsky, V.A. Vasin, A.V. Tang, X. Raskin, J.-P. Lytvyn, P.M. Svezhentsova, K.V. Malyuta, S.V. Nazarov, A.N. Sensors |
| title | Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing |
| title_full | Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing |
| title_fullStr | Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing |
| title_full_unstemmed | Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing |
| title_short | Reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing |
| title_sort | reduced graphene oxide obtained using the spray pyrolysis technique for gas sensing |
| topic | Sensors |
| topic_facet | Sensors |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/215421 |
| work_keys_str_mv | AT slobodianom reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT milovanovyus reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT skryshevskyva reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT vasinav reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT tangx reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT raskinjp reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT lytvynpm reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT svezhentsovakv reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT malyutasv reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing AT nazarovan reducedgrapheneoxideobtainedusingthespraypyrolysistechniqueforgassensing |