SERS of dye film deposited onto gold nano-clusters
Gold nanoclusters were obtained by co-deposition of and polytetrafluoroethylene (PTFE) in vacuum with various gold concentrations. The films deposited were undergone to heating at various temperatures in air. Transformation of ensemble morphology after heating was studied using atomic force micro...
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2010
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| Zitieren: | SERS of dye film deposited onto gold nano-clusters / K. Grytsenko, Yu. Kolomzarov, O. Lytvyn, T. Doroshenko, V. Strelchuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2010. — Т. 13, № 2. — С. 151-153. — Бібліогр.: 12 назв. — англ. |
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Grytsenko, K. Kolomzarov, Yu. Lytvyn, O. Doroshenko, T. Strelchuk, V. 2017-05-29T12:50:02Z 2017-05-29T12:50:02Z 2010 SERS of dye film deposited onto gold nano-clusters / K. Grytsenko, Yu. Kolomzarov, O. Lytvyn, T. Doroshenko, V. Strelchuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2010. — Т. 13, № 2. — С. 151-153. — Бібліогр.: 12 назв. — англ. 1560-8034 PACS 68.37.Ps, 78.67.Bf, 81.07.- b https://nasplib.isofts.kiev.ua/handle/123456789/118213 Gold nanoclusters were obtained by co-deposition of and polytetrafluoroethylene (PTFE) in vacuum with various gold concentrations. The films deposited were undergone to heating at various temperatures in air. Transformation of ensemble morphology after heating was studied using atomic force microscope (AFM). Raman scattering spectra of an ultra-thin film of Rhodamine 6G deposited onto substrates with gold nano-clusters of different morphology were recorded. The best substrate gave strong amplification of the Raman scattering signal from Rhodamine 6G film. Therefore, produced Au nano-clusters are suitable for surface enhanced Raman scattering spectroscopy of nano-quantities of material. Work was made in the frame of Project No 52 of Ukrainian State Program “Nanostructured systems, nanomaterials, nanotechnologies”. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics SERS of dye film deposited onto gold nano-clusters Article published earlier |
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SERS of dye film deposited onto gold nano-clusters |
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SERS of dye film deposited onto gold nano-clusters Grytsenko, K. Kolomzarov, Yu. Lytvyn, O. Doroshenko, T. Strelchuk, V. |
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SERS of dye film deposited onto gold nano-clusters |
| title_full |
SERS of dye film deposited onto gold nano-clusters |
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SERS of dye film deposited onto gold nano-clusters |
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SERS of dye film deposited onto gold nano-clusters |
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sers of dye film deposited onto gold nano-clusters |
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Grytsenko, K. Kolomzarov, Yu. Lytvyn, O. Doroshenko, T. Strelchuk, V. |
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Grytsenko, K. Kolomzarov, Yu. Lytvyn, O. Doroshenko, T. Strelchuk, V. |
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2010 |
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English |
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Semiconductor Physics Quantum Electronics & Optoelectronics |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
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Article |
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Gold nanoclusters were obtained by co-deposition of and
polytetrafluoroethylene (PTFE) in vacuum with various gold concentrations. The films
deposited were undergone to heating at various temperatures in air. Transformation of
ensemble morphology after heating was studied using atomic force microscope (AFM).
Raman scattering spectra of an ultra-thin film of Rhodamine 6G deposited onto
substrates with gold nano-clusters of different morphology were recorded. The best
substrate gave strong amplification of the Raman scattering signal from Rhodamine 6G
film. Therefore, produced Au nano-clusters are suitable for surface enhanced Raman
scattering spectroscopy of nano-quantities of material.
|
| issn |
1560-8034 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/118213 |
| citation_txt |
SERS of dye film deposited onto gold nano-clusters / K. Grytsenko, Yu. Kolomzarov, O. Lytvyn, T. Doroshenko, V. Strelchuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2010. — Т. 13, № 2. — С. 151-153. — Бібліогр.: 12 назв. — англ. |
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| first_indexed |
2025-11-26T00:10:45Z |
| last_indexed |
2025-11-26T00:10:45Z |
| _version_ |
1850595783897776128 |
| fulltext |
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2010. V. 13, N 2. P. 151-153.
© 2010, V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine
151
PACS 68.37.Ps, 78.67.Bf, 81.07.- b
SERS of dye film deposited onto gold nano-clusters
K. Grytsenko*, Yu. Kolomzarov, O. Lytvyn, T. Doroshenko, V. Strelchuk
V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine,
41, prospect Nauky, 03028 Kyiv, Ukraine
*Corresponding author: +380 44 525-55-30; e-mail: d.grytsenko@gmail.com
Abstract. Gold nanoclusters were obtained by co-deposition of and
polytetrafluoroethylene (PTFE) in vacuum with various gold concentrations. The films
deposited were undergone to heating at various temperatures in air. Transformation of
ensemble morphology after heating was studied using atomic force microscope (AFM).
Raman scattering spectra of an ultra-thin film of Rhodamine 6G deposited onto
substrates with gold nano-clusters of different morphology were recorded. The best
substrate gave strong amplification of the Raman scattering signal from Rhodamine 6G
film. Therefore, produced Au nano-clusters are suitable for surface enhanced Raman
scattering spectroscopy of nano-quantities of material.
Keywords: gold, polytetrafluoroethylene, film, annealing, nano-cluster, dye, SERS.
Manuscript received 28.12.09; accepted for publication 25.03.10; published online 30.04.10.
1. Introduction
Recently gold nano-clusters (AuNc) were used for
surface enhanced Raman scattering (SERS) of their both
organic compounds and inorganic materials. Fields of
applications are rather wide: medicine, biology,
semiconductors, sensors, research on the processes
during optical recording and quality of flat displays [1-
4]. Addition of AuNC to dye layers increases light
output from electroluminescent devices [5]. Different
wet and gas phase deposition methods are used for
AuNc production. They are reviewed in [6] together
with one particular method: co-deposition of gold (Au)
and polytetrafluoroethylene (PTFE) vapours in vacuum.
The aim of this work is to investigate how the
AuNc parameters influence SERS signal from dye ultra-
thin film.
2. Experimental details
Films were deposited using УВН-74 (USSR) installation
with a Pfeiffer vacuum pressure meter, Sigma quartz
thickness monitor, optical spectrometer StellarNet.
Rotating glass discs with attached glass and silica slides
were used as substrates. PTFE was evaporated with
vapor activation by electron cloud. Heated with electric
current molybdenium boat was used for Au and dye
evaporation. Optical properties of the growing film were
monitored by optical spectroscopy in situ. Details can be
found elsewhere [6-8]. Au concentration in the film was
from 5 to 20 vol. %, film thickness was varied from 50
to 100 nm. Heating the films was made in the home-
made oven equipped with optical spectrometer Polytec
for spectra recording in situ. Film morphology was
studied by an atomic force microscope Nanoscope IIIa
Dimension 3000™ at room temperature. Rhodamine 6G
(R6G) films were deposited by evaporation in vacuum
onto substrates covered with AuNc. The micro-Raman
measurements were carried out in backscattering
geometry at room temperature using Horiba Jobin Yvon
T64000 system, equipped with an Olympus BX41
confocal optical microscope. The 488.0 nm line of a
Spectra Physics Stability 2018-RM Ar+/Kr+ laser was
used as an excitation source. The spatial resolution of the
confocal arrangement was about 0.4 мm in the X, Y-
plane. The maximum laser power on the sample did not
exceed 1 mW. Raman peak positions were determined
with an error less than 0.15 cm-1.
3. Experimental results and discussion
As-deposited films contain AuNc in PTFE matrix with
sizes dependent on their concentration [7, 8]. The size of
the AuNc was increased from 7 to 50 nm by annealing
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2010. V. 13, N 2. P. 151-153.
© 2010, V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine
152
Fig. 1. Morphology of the AuNc films heated up to the temperatures:
1 – 150 °C, 10 vol.% of AuNc; 2 – 150 °C, 15 vol.% of AuNc; 3 – 220 °C, 20 vol.% of AuNc; 4 – 220 °C, 25 vol.% of AuNc;
5 – 300 °C, 10 vol.% of AuNc; 6 – 300 °C, 15 vol.% of AuNc; 7 – 300 °C, 20 vol.% of AuNc; 8 – 300 °C, 25 vol.% of AuNc.
Au vol.% is indicated for as-deposited films.
Fig. 2. SERS of the R6G ultra-thin film onto Au nano-
clustered surfaces: 1, 2, 3 represent spectra recorded using
substrates with different AuNc morphology.
within the temperature range from 50 to 300 єС. Optical
absorption spectroscopy in situ following the heating
process showed complex shift of the plasmon band
maximum wavelength and its shape at various
temperatures, in dependence on the AuNc concentration.
Several AuNc samples were taken at critical optical
points [9, 10] for AFM investigation. The surface
morphology of the films heated to different temperatures
is presented in Fig. 1. The higher were Au concentration
and heating temperature, the larger final AuNc mean
size. The temperature elevation increased the diffusion
rate of Au atoms, PTFE matrix became more soft. The
mean size of the AuNc was increased at the first stage of
heating by surface diffusion from small clusters to larger
ones. At higher temperature, AuNc growth continued,
which led to increase of the distance between AuNc and
suppressing the effects related with inter-cluster
interactions [9, 10].
The SERS of ultra-thin film of R6G (thickness
10 nm) deposited onto glass substrate covered with
AuNc are presented in Fig. 2. The obtained SERS
spectra are in good agreement with the known spectra
for R6G presented in the recent publications [11, 12].
Amplification of the Raman scattering signal is not
linearly related with the Au concentration and heating
temperature. The influence of these factors should be
determined in details during the next experiments.
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2010. V. 13, N 2. P. 151-153.
© 2010, V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine
153
4. Conclusions
Low temperature annealing of gold-PTFE composite
thin film allows production of substrate for surface
enhanced Raman scattering measurements.
Acknowledgements
Work was made in the frame of Project No 52 of
Ukrainian State Program “Nanostructured systems,
nanomaterials, nanotechnologies”.
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