Synthesis of InN@SiO₂ nanostructures and fabrication of blue LED devices.
Identifieur interne : 000A13 ( Main/Exploration ); précédent : 000A12; suivant : 000A14Synthesis of InN@SiO₂ nanostructures and fabrication of blue LED devices.
Auteurs : RBID : pubmed:22738190Abstract
We synthesized InN@SiO(2) nanostructures (i.e., nanoparticles and nanowires) by varying the annealing temperature and nitridation conditions of In(2)O(3)@SiO(2) nanoparticles in the presence of ammonia. The In(2)O(3)@SiO(2) nanoparticles were synthesized using a urea-based homogeneous precipitation of indium hydroxide on the surface of the SiO(2) (15 nm) nanoparticles, followed by annealing at 600 °C in air. Subsequently, nitridation of In(2)O(3)@SiO(2) nanoparticles in ammonia at 600 °C for 2 h resulted in InN@SiO(2) nanoparticles. The sizes of InN nanoparticles are ∼5 nm on the silica surface. Nitridation at the same temperature for 3-5 h gave InN nanoparticles of size ∼20 nm. Furthermore, on annealing above 650 °C the InN nanoparticles grew in the form of nanowires. The nanowires are 4-5 μm in length and have a diameter of 100 nm. The photoluminescence peak of both InN@SiO(2) nanoparticles and nanowires is centered at 442 nm (λ(exi) = 325 nm). Subsequently, the surface of InN@SiO(2) nanoparticles was modified by reacting with dodecyltriethoxysilane at 80 °C, which enabled them to be dispersible in toluene. The surface-modified InN@SiO(2) nanoparticles were used to fabricate blue electroluminescence devices which showed blue electroluminescence peak centered at 442 nm. The Commission Internationale de I'Eclairage (CIE) coordinates of InN@SiO(2) nanoparticles are X = 0.15 and Y = 0.13, which is well within the blue region and commercially appropriate.
DOI: 10.1021/am300704g
PubMed: 22738190
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Synthesis of InN@SiO₂ nanostructures and fabrication of blue LED devices.</title><author><name sortKey="Gautam, Anurag" uniqKey="Gautam A">Anurag Gautam</name><affiliation wicri:level="1"><nlm:affiliation>Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6</wicri:regionArea></affiliation></author><author><name sortKey="Van Veggel, Frank C J M" uniqKey="Van Veggel F">Frank C J M van Veggel</name></author></titleStmt><publicationStmt><date when="2012">2012</date><idno type="doi">10.1021/am300704g</idno><idno type="RBID">pubmed:22738190</idno><idno type="pmid">22738190</idno><idno type="wicri:Area/Main/Corpus">000C27</idno><idno type="wicri:Area/Main/Curation">000C27</idno><idno type="wicri:Area/Main/Exploration">000A13</idno></publicationStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We synthesized InN@SiO(2) nanostructures (i.e., nanoparticles and nanowires) by varying the annealing temperature and nitridation conditions of In(2)O(3)@SiO(2) nanoparticles in the presence of ammonia. The In(2)O(3)@SiO(2) nanoparticles were synthesized using a urea-based homogeneous precipitation of indium hydroxide on the surface of the SiO(2) (15 nm) nanoparticles, followed by annealing at 600 °C in air. Subsequently, nitridation of In(2)O(3)@SiO(2) nanoparticles in ammonia at 600 °C for 2 h resulted in InN@SiO(2) nanoparticles. The sizes of InN nanoparticles are ∼5 nm on the silica surface. Nitridation at the same temperature for 3-5 h gave InN nanoparticles of size ∼20 nm. Furthermore, on annealing above 650 °C the InN nanoparticles grew in the form of nanowires. The nanowires are 4-5 μm in length and have a diameter of 100 nm. The photoluminescence peak of both InN@SiO(2) nanoparticles and nanowires is centered at 442 nm (λ(exi) = 325 nm). Subsequently, the surface of InN@SiO(2) nanoparticles was modified by reacting with dodecyltriethoxysilane at 80 °C, which enabled them to be dispersible in toluene. The surface-modified InN@SiO(2) nanoparticles were used to fabricate blue electroluminescence devices which showed blue electroluminescence peak centered at 442 nm. The Commission Internationale de I'Eclairage (CIE) coordinates of InN@SiO(2) nanoparticles are X = 0.15 and Y = 0.13, which is well within the blue region and commercially appropriate.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">22738190</PMID><DateCreated><Year>2012</Year><Month>08</Month><Day>22</Day></DateCreated><DateCompleted><Year>2012</Year><Month>11</Month><Day>13</Day></DateCompleted><DateRevised><Year>2013</Year><Month>03</Month><Day>04</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1944-8252</ISSN><JournalIssue CitedMedium="Internet"><Volume>4</Volume><Issue>8</Issue><PubDate><Year>2012</Year><Month>Aug</Month></PubDate></JournalIssue><Title>ACS applied materials & interfaces</Title><ISOAbbreviation>ACS Appl Mater Interfaces</ISOAbbreviation></Journal><ArticleTitle>Synthesis of InN@SiO₂ nanostructures and fabrication of blue LED devices.</ArticleTitle><Pagination><MedlinePgn>3902-9</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/am300704g</ELocationID><Abstract><AbstractText>We synthesized InN@SiO(2) nanostructures (i.e., nanoparticles and nanowires) by varying the annealing temperature and nitridation conditions of In(2)O(3)@SiO(2) nanoparticles in the presence of ammonia. The In(2)O(3)@SiO(2) nanoparticles were synthesized using a urea-based homogeneous precipitation of indium hydroxide on the surface of the SiO(2) (15 nm) nanoparticles, followed by annealing at 600 °C in air. Subsequently, nitridation of In(2)O(3)@SiO(2) nanoparticles in ammonia at 600 °C for 2 h resulted in InN@SiO(2) nanoparticles. The sizes of InN nanoparticles are ∼5 nm on the silica surface. Nitridation at the same temperature for 3-5 h gave InN nanoparticles of size ∼20 nm. Furthermore, on annealing above 650 °C the InN nanoparticles grew in the form of nanowires. The nanowires are 4-5 μm in length and have a diameter of 100 nm. The photoluminescence peak of both InN@SiO(2) nanoparticles and nanowires is centered at 442 nm (λ(exi) = 325 nm). Subsequently, the surface of InN@SiO(2) nanoparticles was modified by reacting with dodecyltriethoxysilane at 80 °C, which enabled them to be dispersible in toluene. The surface-modified InN@SiO(2) nanoparticles were used to fabricate blue electroluminescence devices which showed blue electroluminescence peak centered at 442 nm. The Commission Internationale de I'Eclairage (CIE) coordinates of InN@SiO(2) nanoparticles are X = 0.15 and Y = 0.13, which is well within the blue region and commercially appropriate.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Gautam</LastName><ForeName>Anurag</ForeName><Initials>A</Initials><Affiliation>Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada.</Affiliation></Author><Author ValidYN="Y"><LastName>van Veggel</LastName><ForeName>Frank C J M</ForeName><Initials>FC</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>07</Month><Day>24</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>ACS Appl Mater Interfaces</MedlineTA><NlmUniqueID>101504991</NlmUniqueID><ISSNLinking>1944-8244</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2012</Year><Month>7</Month><Day>24</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>6</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>6</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2012</Year><Month>6</Month><Day>29</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1021/am300704g</ArticleId><ArticleId IdType="pubmed">22738190</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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