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Statements

Subject Item
n2:RIV%2F68407700%3A21340%2F11%3A00190635%21RIV12-AV0-21340___
rdf:type
skos:Concept n20:Vysledek
dcterms:description
Colloid solutions with reverse micelles represent an efficient technology to prepare metal nanoparticles (NPs) which exhibit stable size and small size distribution. Size of nanoparticles can be purposely changed by adjusting parameters of colloid chemistry. Preparation of stable colloid solutions with electrically charged nanoparticles having small distribution of shape and size is a prerequisit for successful deposition of nanoparticles on the semiconductor surface by using electrophoretic deposition. In this paper colloid solutions of gold, palladium and rhodium NPs were prepared in reverse micelles, their absorption spectra were investigated, and surface plasmon absorption bands were identified. Layers of metal NPs were deposited on InP substrates by electrophoretic deposition. Structural and luminescence properties of deposited layers were investigated by SEM and low-temperature photoluminescence spectroscopy. Schottky barriers were prepared by dropping colloidal graphite onto the surface of InP, partly covered with metal nanoparticles. Current-voltage characteristics were measured and relevant parameters of Schottky barriers were evaluated. In the case of Pd nanolayers it was found that several ppm of hydrogen in nitrogen gas can be detected by monitoring the change of diode current at a constant bias voltage. Sensitivity of Schottky barrier to hydrogen was measured for substrates with different coverage. Colloid solutions with reverse micelles represent an efficient technology to prepare metal nanoparticles (NPs) which exhibit stable size and small size distribution. Size of nanoparticles can be purposely changed by adjusting parameters of colloid chemistry. Preparation of stable colloid solutions with electrically charged nanoparticles having small distribution of shape and size is a prerequisit for successful deposition of nanoparticles on the semiconductor surface by using electrophoretic deposition. In this paper colloid solutions of gold, palladium and rhodium NPs were prepared in reverse micelles, their absorption spectra were investigated, and surface plasmon absorption bands were identified. Layers of metal NPs were deposited on InP substrates by electrophoretic deposition. Structural and luminescence properties of deposited layers were investigated by SEM and low-temperature photoluminescence spectroscopy. Schottky barriers were prepared by dropping colloidal graphite onto the surface of InP, partly covered with metal nanoparticles. Current-voltage characteristics were measured and relevant parameters of Schottky barriers were evaluated. In the case of Pd nanolayers it was found that several ppm of hydrogen in nitrogen gas can be detected by monitoring the change of diode current at a constant bias voltage. Sensitivity of Schottky barrier to hydrogen was measured for substrates with different coverage.
dcterms:title
Preparation and Characterization of Layers of Au, Pd and Rh Nanoparticles Deposited on n-InP Substrates Preparation and Characterization of Layers of Au, Pd and Rh Nanoparticles Deposited on n-InP Substrates
skos:prefLabel
Preparation and Characterization of Layers of Au, Pd and Rh Nanoparticles Deposited on n-InP Substrates Preparation and Characterization of Layers of Au, Pd and Rh Nanoparticles Deposited on n-InP Substrates
skos:notation
RIV/68407700:21340/11:00190635!RIV12-AV0-21340___
n20:predkladatel
n21:orjk%3A21340
n3:aktivita
n15:P
n3:aktivity
P(GA102/09/1037), P(KAN401220801)
n3:dodaniDat
n17:2012
n3:domaciTvurceVysledku
n4:4739922 n4:9377735
n3:druhVysledku
n12:D
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
223037
n3:idVysledku
RIV/68407700:21340/11:00190635
n3:jazykVysledku
n13:eng
n3:klicovaSlova
colloid solutions; reverse micelles; metal nanoparticles; electrophoretic deposition; InP; Schottky diodes
n3:klicoveSlovo
n6:Schottky%20diodes n6:colloid%20solutions n6:metal%20nanoparticles n6:InP n6:reverse%20micelles n6:electrophoretic%20deposition
n3:kontrolniKodProRIV
[B04E2402B499]
n3:mistoKonaniAkce
Brno
n3:mistoVydani
Ostrava
n3:nazevZdroje
NANOCON 2011 - Conference Proceedings
n3:obor
n19:JB
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n8:KAN401220801 n8:GA102%2F09%2F1037
n3:rokUplatneniVysledku
n17:2011
n3:tvurceVysledku
Koštejn, Martin Žďánský, K. Piksová, Kateřina Zavadil, J.
n3:typAkce
n5:EUR
n3:zahajeniAkce
2011-09-21+02:00
s:numberOfPages
5
n14:hasPublisher
TANGER spol. s r.o.
n9:isbn
978-80-87294-27-7
n10:organizacniJednotka
21340