Morphology and Photoluminescence of HfO₂ Obtained by Microwave-Hydrothermal

Morphology and Photoluminescence of HfO₂ Obtained by Microwave-Hydrothermal

In this letter, we report on the obtention of hafnium oxide (HfO₂) nanostructures by the microwave-hydrothermal method. These nanostructures were analyzed by X-ray diffraction (XRD), field-emission gum scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), energy dispersive...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nanoscale research letters 2009-11, Vol.4 (11), p.1371-1379
Hauptverfasser: Eliziário, S. A, Cavalcante, L. S, Sczancoski, J. C, Pizani, P. S, Varela, J. A, Espinosa, J. W. M, Longo, E
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 1379
container_issue 11
container_start_page 1371
container_title Nanoscale research letters
container_volume 4
creator Eliziário, S. A
Cavalcante, L. S
Sczancoski, J. C
Pizani, P. S
Varela, J. A
Espinosa, J. W. M
Longo, E
description In this letter, we report on the obtention of hafnium oxide (HfO₂) nanostructures by the microwave-hydrothermal method. These nanostructures were analyzed by X-ray diffraction (XRD), field-emission gum scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDXS), ultraviolet-visible (UV-vis) spectroscopy, and photoluminescence (PL) measurements. XRD patterns confirmed that this material crystallizes in a monoclinic structure. FEG-SEM and TEM micrographs indicated that the rice-like morphologies were formed due to an increase in the effective collisions between the nanoparticles during the MH processing. The EDXS spectrum was used to verify the chemical compositional of this oxide. UV-vis spectrum revealed that this material have an indirect optical band gap. When excited with 488 nm wavelength at room temperature, the HfO₂ nanostructures exhibited only one broad PL band with a maximum at around 548 nm (green emission).
doi_str_mv 10.1007/s11671-009-9407-6
format Article
fullrecord <record><control><sourceid>fao</sourceid><recordid>TN_cdi_fao_agris_US201301695640</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US201301695640</sourcerecordid><originalsourceid>FETCH-LOGICAL-f109t-c856530a93bc3a3c5dfe53e44434c0769b0fd567c6309644158b14f0daab9f273</originalsourceid><addsrcrecordid>eNotjstKw0AYRgdRsFYfwJXzAqP_ZG6dpRS1hYYIWnBX5tpE0oxkopJtH9UnMaCr73AWhw-hawq3FEDdZUqlogRAE81BEXmCZlQISQol304n1owSJRQ7Rxc5vwNwBUrOUFmm_qNObdqP2HQeP9dpSO3noelCdqFzAaeIV7H6OR5xZQczeY_tiMvG9enbfAWyGn2fhjr0B9NeorNo2hyu_neOto8Pr8sV2VRP6-X9hkQKeiBuIaRgYDSzjhnmhI9BsMA5Z9xNt7SF6IVUTjLQknMqFpbyCN4Yq2Oh2Bzd_HWjSTuz75u8274UQBlQqYXkwH4BQ3tOYw</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Morphology and Photoluminescence of HfO₂ Obtained by Microwave-Hydrothermal</title><source>DOAJ Directory of Open Access Journals</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>PubMed Central Open Access</source><source>PubMed Central</source><source>Free Full-Text Journals in Chemistry</source><creator>Eliziário, S. A ; Cavalcante, L. S ; Sczancoski, J. C ; Pizani, P. S ; Varela, J. A ; Espinosa, J. W. M ; Longo, E</creator><creatorcontrib>Eliziário, S. A ; Cavalcante, L. S ; Sczancoski, J. C ; Pizani, P. S ; Varela, J. A ; Espinosa, J. W. M ; Longo, E</creatorcontrib><description>In this letter, we report on the obtention of hafnium oxide (HfO₂) nanostructures by the microwave-hydrothermal method. These nanostructures were analyzed by X-ray diffraction (XRD), field-emission gum scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDXS), ultraviolet-visible (UV-vis) spectroscopy, and photoluminescence (PL) measurements. XRD patterns confirmed that this material crystallizes in a monoclinic structure. FEG-SEM and TEM micrographs indicated that the rice-like morphologies were formed due to an increase in the effective collisions between the nanoparticles during the MH processing. The EDXS spectrum was used to verify the chemical compositional of this oxide. UV-vis spectrum revealed that this material have an indirect optical band gap. When excited with 488 nm wavelength at room temperature, the HfO₂ nanostructures exhibited only one broad PL band with a maximum at around 548 nm (green emission).</description><identifier>ISSN: 1931-7573</identifier><identifier>EISSN: 1556-276X</identifier><identifier>DOI: 10.1007/s11671-009-9407-6</identifier><language>eng</language><publisher>New York : Springer-Verlag</publisher><ispartof>Nanoscale research letters, 2009-11, Vol.4 (11), p.1371-1379</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,860,27903,27904</link.rule.ids></links><search><creatorcontrib>Eliziário, S. A</creatorcontrib><creatorcontrib>Cavalcante, L. S</creatorcontrib><creatorcontrib>Sczancoski, J. C</creatorcontrib><creatorcontrib>Pizani, P. S</creatorcontrib><creatorcontrib>Varela, J. A</creatorcontrib><creatorcontrib>Espinosa, J. W. M</creatorcontrib><creatorcontrib>Longo, E</creatorcontrib><title>Morphology and Photoluminescence of HfO₂ Obtained by Microwave-Hydrothermal</title><title>Nanoscale research letters</title><description>In this letter, we report on the obtention of hafnium oxide (HfO₂) nanostructures by the microwave-hydrothermal method. These nanostructures were analyzed by X-ray diffraction (XRD), field-emission gum scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDXS), ultraviolet-visible (UV-vis) spectroscopy, and photoluminescence (PL) measurements. XRD patterns confirmed that this material crystallizes in a monoclinic structure. FEG-SEM and TEM micrographs indicated that the rice-like morphologies were formed due to an increase in the effective collisions between the nanoparticles during the MH processing. The EDXS spectrum was used to verify the chemical compositional of this oxide. UV-vis spectrum revealed that this material have an indirect optical band gap. When excited with 488 nm wavelength at room temperature, the HfO₂ nanostructures exhibited only one broad PL band with a maximum at around 548 nm (green emission).</description><issn>1931-7573</issn><issn>1556-276X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNotjstKw0AYRgdRsFYfwJXzAqP_ZG6dpRS1hYYIWnBX5tpE0oxkopJtH9UnMaCr73AWhw-hawq3FEDdZUqlogRAE81BEXmCZlQISQol304n1owSJRQ7Rxc5vwNwBUrOUFmm_qNObdqP2HQeP9dpSO3noelCdqFzAaeIV7H6OR5xZQczeY_tiMvG9enbfAWyGn2fhjr0B9NeorNo2hyu_neOto8Pr8sV2VRP6-X9hkQKeiBuIaRgYDSzjhnmhI9BsMA5Z9xNt7SF6IVUTjLQknMqFpbyCN4Yq2Oh2Bzd_HWjSTuz75u8274UQBlQqYXkwH4BQ3tOYw</recordid><startdate>20091101</startdate><enddate>20091101</enddate><creator>Eliziário, S. A</creator><creator>Cavalcante, L. S</creator><creator>Sczancoski, J. C</creator><creator>Pizani, P. S</creator><creator>Varela, J. A</creator><creator>Espinosa, J. W. M</creator><creator>Longo, E</creator><general>New York : Springer-Verlag</general><scope>FBQ</scope></search><sort><creationdate>20091101</creationdate><title>Morphology and Photoluminescence of HfO₂ Obtained by Microwave-Hydrothermal</title><author>Eliziário, S. A ; Cavalcante, L. S ; Sczancoski, J. C ; Pizani, P. S ; Varela, J. A ; Espinosa, J. W. M ; Longo, E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-f109t-c856530a93bc3a3c5dfe53e44434c0769b0fd567c6309644158b14f0daab9f273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Eliziário, S. A</creatorcontrib><creatorcontrib>Cavalcante, L. S</creatorcontrib><creatorcontrib>Sczancoski, J. C</creatorcontrib><creatorcontrib>Pizani, P. S</creatorcontrib><creatorcontrib>Varela, J. A</creatorcontrib><creatorcontrib>Espinosa, J. W. M</creatorcontrib><creatorcontrib>Longo, E</creatorcontrib><collection>AGRIS</collection><jtitle>Nanoscale research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Eliziário, S. A</au><au>Cavalcante, L. S</au><au>Sczancoski, J. C</au><au>Pizani, P. S</au><au>Varela, J. A</au><au>Espinosa, J. W. M</au><au>Longo, E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Morphology and Photoluminescence of HfO₂ Obtained by Microwave-Hydrothermal</atitle><jtitle>Nanoscale research letters</jtitle><date>2009-11-01</date><risdate>2009</risdate><volume>4</volume><issue>11</issue><spage>1371</spage><epage>1379</epage><pages>1371-1379</pages><issn>1931-7573</issn><eissn>1556-276X</eissn><abstract>In this letter, we report on the obtention of hafnium oxide (HfO₂) nanostructures by the microwave-hydrothermal method. These nanostructures were analyzed by X-ray diffraction (XRD), field-emission gum scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDXS), ultraviolet-visible (UV-vis) spectroscopy, and photoluminescence (PL) measurements. XRD patterns confirmed that this material crystallizes in a monoclinic structure. FEG-SEM and TEM micrographs indicated that the rice-like morphologies were formed due to an increase in the effective collisions between the nanoparticles during the MH processing. The EDXS spectrum was used to verify the chemical compositional of this oxide. UV-vis spectrum revealed that this material have an indirect optical band gap. When excited with 488 nm wavelength at room temperature, the HfO₂ nanostructures exhibited only one broad PL band with a maximum at around 548 nm (green emission).</abstract><pub>New York : Springer-Verlag</pub><doi>10.1007/s11671-009-9407-6</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 1931-7573
ispartof Nanoscale research letters, 2009-11, Vol.4 (11), p.1371-1379
issn 1931-7573
1556-276X
language eng
recordid cdi_fao_agris_US201301695640
source DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; PubMed Central; Free Full-Text Journals in Chemistry
title Morphology and Photoluminescence of HfO₂ Obtained by Microwave-Hydrothermal
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-25T21%3A46%3A39IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-fao&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Morphology%20and%20Photoluminescence%20of%20HfO%E2%82%82%20Obtained%20by%20Microwave-Hydrothermal&rft.jtitle=Nanoscale%20research%20letters&rft.au=Elizi%C3%A1rio,%20S.%20A&rft.date=2009-11-01&rft.volume=4&rft.issue=11&rft.spage=1371&rft.epage=1379&rft.pages=1371-1379&rft.issn=1931-7573&rft.eissn=1556-276X&rft_id=info:doi/10.1007/s11671-009-9407-6&rft_dat=%3Cfao%3EUS201301695640%3C/fao%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true