Microwave-assisted polyol synthesis of aluminium- and indium-doped ZnO nanocrystals.
Identifieur interne : 001D69 ( Main/Exploration ); précédent : 001D68; suivant : 001D70Microwave-assisted polyol synthesis of aluminium- and indium-doped ZnO nanocrystals.
Auteurs : RBID : pubmed:19375713Abstract
Microwave heating is applied to prepare suspensions of ZnO:In (IZO) and ZnO:Al (AZO) nanocrystals in diethylene glycol as a high-boiling multidentate alcohol (so-called polyol). Both n-doped zinc oxides are realized with high yields and in suspensions with solid contents up to 10 wt-%. These suspensions are colloidally stable for months. According to dynamic light scattering, scanning electron microscopy, transmission electron microscopy, X-ray diffraction patterns and Brunauer-Emmett-Teller analysis as-prepared particles turn out to be single crystalline with an average diameter of 10-15 nm, a near monodisperse size distribution, and a low degree of agglomeration. As-prepared samples exhibit high resistivities due to the adhesion of DEG as a stabilizer on the particle surface. Subsequent to specific thermal post-treatment resistivities of 2.0 x 10(-1) and 5.7 x 10(-1) Omegacm are obtained for IZO and AZO powders, respectively. As a proof of the concept, thin layers are deposited on glass plates using a simple solvent evaporation technique. Post-treated layers exhibit a visible transmittance of about 80% and resistivities of 2.1 x 10(-1) Omegacm (IZO) and 2.6 x 10(-1) Omegacm (AZO). The bandgap of post-treated powders and thin layers is calculated to 3.2 and 3.3 eV, respectively.
DOI: 10.1016/j.jcis.2009.03.010
PubMed: 19375713
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Microwave-assisted polyol synthesis of aluminium- and indium-doped ZnO nanocrystals.</title><author><name sortKey="Hammarberg, Elin" uniqKey="Hammarberg E">Elin Hammarberg</name><affiliation wicri:level="3"><nlm:affiliation>Institute of Inorganic Chemistry, Engesserstr. 15, University of Karlsruhe (TH), D-76131 Karlsruhe, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institute of Inorganic Chemistry, Engesserstr. 15, University of Karlsruhe (TH), D-76131 Karlsruhe</wicri:regionArea><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Karlsruhe</region><settlement type="city">Karlsruhe</settlement></placeName></affiliation></author><author><name sortKey="Prodi Schwab, Anna" uniqKey="Prodi Schwab A">Anna Prodi-Schwab</name></author><author><name sortKey="Feldmann, Claus" uniqKey="Feldmann C">Claus Feldmann</name></author></titleStmt><publicationStmt><date when="2009">2009</date><idno type="doi">10.1016/j.jcis.2009.03.010</idno><idno type="RBID">pubmed:19375713</idno><idno type="pmid">19375713</idno><idno type="wicri:Area/Main/Corpus">001F29</idno><idno type="wicri:Area/Main/Curation">001F29</idno><idno type="wicri:Area/Main/Exploration">001D69</idno></publicationStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Microwave heating is applied to prepare suspensions of ZnO:In (IZO) and ZnO:Al (AZO) nanocrystals in diethylene glycol as a high-boiling multidentate alcohol (so-called polyol). Both n-doped zinc oxides are realized with high yields and in suspensions with solid contents up to 10 wt-%. These suspensions are colloidally stable for months. According to dynamic light scattering, scanning electron microscopy, transmission electron microscopy, X-ray diffraction patterns and Brunauer-Emmett-Teller analysis as-prepared particles turn out to be single crystalline with an average diameter of 10-15 nm, a near monodisperse size distribution, and a low degree of agglomeration. As-prepared samples exhibit high resistivities due to the adhesion of DEG as a stabilizer on the particle surface. Subsequent to specific thermal post-treatment resistivities of 2.0 x 10(-1) and 5.7 x 10(-1) Omegacm are obtained for IZO and AZO powders, respectively. As a proof of the concept, thin layers are deposited on glass plates using a simple solvent evaporation technique. Post-treated layers exhibit a visible transmittance of about 80% and resistivities of 2.1 x 10(-1) Omegacm (IZO) and 2.6 x 10(-1) Omegacm (AZO). The bandgap of post-treated powders and thin layers is calculated to 3.2 and 3.3 eV, respectively.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">19375713</PMID><DateCreated><Year>2009</Year><Month>05</Month><Day>11</Day></DateCreated><DateCompleted><Year>2009</Year><Month>08</Month><Day>11</Day></DateCompleted><DateRevised><Year>2009</Year><Month>11</Month><Day>11</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1095-7103</ISSN><JournalIssue CitedMedium="Internet"><Volume>334</Volume><Issue>1</Issue><PubDate><Year>2009</Year><Month>Jun</Month><Day>1</Day></PubDate></JournalIssue><Title>Journal of colloid and interface science</Title><ISOAbbreviation>J Colloid Interface Sci</ISOAbbreviation></Journal><ArticleTitle>Microwave-assisted polyol synthesis of aluminium- and indium-doped ZnO nanocrystals.</ArticleTitle><Pagination><MedlinePgn>29-36</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.jcis.2009.03.010</ELocationID><Abstract><AbstractText>Microwave heating is applied to prepare suspensions of ZnO:In (IZO) and ZnO:Al (AZO) nanocrystals in diethylene glycol as a high-boiling multidentate alcohol (so-called polyol). Both n-doped zinc oxides are realized with high yields and in suspensions with solid contents up to 10 wt-%. These suspensions are colloidally stable for months. According to dynamic light scattering, scanning electron microscopy, transmission electron microscopy, X-ray diffraction patterns and Brunauer-Emmett-Teller analysis as-prepared particles turn out to be single crystalline with an average diameter of 10-15 nm, a near monodisperse size distribution, and a low degree of agglomeration. As-prepared samples exhibit high resistivities due to the adhesion of DEG as a stabilizer on the particle surface. Subsequent to specific thermal post-treatment resistivities of 2.0 x 10(-1) and 5.7 x 10(-1) Omegacm are obtained for IZO and AZO powders, respectively. As a proof of the concept, thin layers are deposited on glass plates using a simple solvent evaporation technique. Post-treated layers exhibit a visible transmittance of about 80% and resistivities of 2.1 x 10(-1) Omegacm (IZO) and 2.6 x 10(-1) Omegacm (AZO). The bandgap of post-treated powders and thin layers is calculated to 3.2 and 3.3 eV, respectively.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hammarberg</LastName><ForeName>Elin</ForeName><Initials>E</Initials><Affiliation>Institute of Inorganic Chemistry, Engesserstr. 15, University of Karlsruhe (TH), D-76131 Karlsruhe, Germany.</Affiliation></Author><Author ValidYN="Y"><LastName>Prodi-Schwab</LastName><ForeName>Anna</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Feldmann</LastName><ForeName>Claus</ForeName><Initials>C</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2009</Year><Month>03</Month><Day>28</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Colloid Interface Sci</MedlineTA><NlmUniqueID>0043125</NlmUniqueID><ISSNLinking>0021-9797</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2008</Year><Month>10</Month><Day>8</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2009</Year><Month>2</Month><Day>16</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2009</Year><Month>3</Month><Day>13</Day></PubMedPubDate><PubMedPubDate PubStatus="aheadofprint"><Year>2009</Year><Month>3</Month><Day>28</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2009</Year><Month>4</Month><Day>21</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2009</Year><Month>4</Month><Day>21</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2009</Year><Month>4</Month><Day>21</Day><Hour>9</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">S0021-9797(09)00310-5</ArticleId><ArticleId IdType="doi">10.1016/j.jcis.2009.03.010</ArticleId><ArticleId IdType="pubmed">19375713</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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