Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200027 |
Resumo: | In this work we report the formation of long microcrystalline linear self-assemblies observed during the thin film growth of several II-VI compounds. Polycrystalline CdTe, CdS, CdCO3, and nanocrystalline CdTe:Al thin films were prepared on glass substrates by different deposition techniques. In order to observe these crystalline formations in the polycrystalline materials, the thin film growth was suspended before the grains reached to form a continuous layer. The chains of semiconductor crystals were observed among many isolated and randomly distributed grains. Since CdTe, CdTe:Al, CdS and CdCO3 are not ferroelectric and/or ferromagnetic materials, the relevant problem would be to explain what is the mechanism through which the grains are held together to form linear chains. It is well known that some nanocrystalline materials form rods and wires by means of electrostatic forces. This occurs in polar semiconductors, where it is assumed that the attraction forces between surface polar faces of the small crystals are the responsible for the chains formation. Since there are not too many mechanisms responsible for the attraction we assume that a dipolar interaction is the force that originates the formation of chain-like grain clusters. The study of this property can be useful for the understanding of nucleation processes in the growth of semiconductor thin films. |
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Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assembliesII-VI compoundssemiconductorsgrowth processesgrain-chainsPACS 61.72.uj; 6182.Fk; 81.10.jt.; 81.10.-hIn this work we report the formation of long microcrystalline linear self-assemblies observed during the thin film growth of several II-VI compounds. Polycrystalline CdTe, CdS, CdCO3, and nanocrystalline CdTe:Al thin films were prepared on glass substrates by different deposition techniques. In order to observe these crystalline formations in the polycrystalline materials, the thin film growth was suspended before the grains reached to form a continuous layer. The chains of semiconductor crystals were observed among many isolated and randomly distributed grains. Since CdTe, CdTe:Al, CdS and CdCO3 are not ferroelectric and/or ferromagnetic materials, the relevant problem would be to explain what is the mechanism through which the grains are held together to form linear chains. It is well known that some nanocrystalline materials form rods and wires by means of electrostatic forces. This occurs in polar semiconductors, where it is assumed that the attraction forces between surface polar faces of the small crystals are the responsible for the chains formation. Since there are not too many mechanisms responsible for the attraction we assume that a dipolar interaction is the force that originates the formation of chain-like grain clusters. The study of this property can be useful for the understanding of nucleation processes in the growth of semiconductor thin films.ABM, ABC, ABPol2013-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200027Materials Research v.16 n.2 2013reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392013005000011info:eu-repo/semantics/openAccessBecerril,MarcelinoPortillo-Moreno,ÓscarLozada-Moráles,RosendoRamírez-Bon,RafaelOchoa-Landín,RamónSánchez-Sinencio,FelicianoSantoyo-Salazar,JaimeZelaya-Angel,Orlandoeng2013-03-19T00:00:00Zoai:scielo:S1516-14392013000200027Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2013-03-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies |
title |
Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies |
spellingShingle |
Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies Becerril,Marcelino II-VI compounds semiconductors growth processes grain-chains PACS 61.72.uj; 6182.Fk; 81.10.jt.; 81.10.-h |
title_short |
Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies |
title_full |
Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies |
title_fullStr |
Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies |
title_full_unstemmed |
Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies |
title_sort |
Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies |
author |
Becerril,Marcelino |
author_facet |
Becerril,Marcelino Portillo-Moreno,Óscar Lozada-Moráles,Rosendo Ramírez-Bon,Rafael Ochoa-Landín,Ramón Sánchez-Sinencio,Feliciano Santoyo-Salazar,Jaime Zelaya-Angel,Orlando |
author_role |
author |
author2 |
Portillo-Moreno,Óscar Lozada-Moráles,Rosendo Ramírez-Bon,Rafael Ochoa-Landín,Ramón Sánchez-Sinencio,Feliciano Santoyo-Salazar,Jaime Zelaya-Angel,Orlando |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Becerril,Marcelino Portillo-Moreno,Óscar Lozada-Moráles,Rosendo Ramírez-Bon,Rafael Ochoa-Landín,Ramón Sánchez-Sinencio,Feliciano Santoyo-Salazar,Jaime Zelaya-Angel,Orlando |
dc.subject.por.fl_str_mv |
II-VI compounds semiconductors growth processes grain-chains PACS 61.72.uj; 6182.Fk; 81.10.jt.; 81.10.-h |
topic |
II-VI compounds semiconductors growth processes grain-chains PACS 61.72.uj; 6182.Fk; 81.10.jt.; 81.10.-h |
description |
In this work we report the formation of long microcrystalline linear self-assemblies observed during the thin film growth of several II-VI compounds. Polycrystalline CdTe, CdS, CdCO3, and nanocrystalline CdTe:Al thin films were prepared on glass substrates by different deposition techniques. In order to observe these crystalline formations in the polycrystalline materials, the thin film growth was suspended before the grains reached to form a continuous layer. The chains of semiconductor crystals were observed among many isolated and randomly distributed grains. Since CdTe, CdTe:Al, CdS and CdCO3 are not ferroelectric and/or ferromagnetic materials, the relevant problem would be to explain what is the mechanism through which the grains are held together to form linear chains. It is well known that some nanocrystalline materials form rods and wires by means of electrostatic forces. This occurs in polar semiconductors, where it is assumed that the attraction forces between surface polar faces of the small crystals are the responsible for the chains formation. Since there are not too many mechanisms responsible for the attraction we assume that a dipolar interaction is the force that originates the formation of chain-like grain clusters. The study of this property can be useful for the understanding of nucleation processes in the growth of semiconductor thin films. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200027 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200027 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392013005000011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.16 n.2 2013 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212662819946496 |