Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals

Bibliographic Details
Main Author: Rita, Elisabete Maria Casa Nova Correia, 1976-
Publication Date: 2008
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10451/1559
Summary: Tese de doutoramento em Física, apresentada à Universidade de Lisboa através da Faculdade de Ciências, 2008
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spelling Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystalsFísicaTeses de doutoramento - 2008Tese de doutoramento em Física, apresentada à Universidade de Lisboa através da Faculdade de Ciências, 2008This thesis presents an experimental study of the local environment of P-type and Rare-Earth dopants implanted in ZnO single-crystals (SCs). Various nuclear and bulk property techniques were combined in the following evaluations: Implantation damage annealing Implantation damage annealing was evaluated in ZnO SCs implanted with Fe, Sr and Ca. P-type dopants Cu and Ag implanted ZnO SCs were studied revealing that the solubility of Cu in substituting Zn is considerably higher than that of Ag. These results are discussed within the scope of the ZnO p-type doping problematic with these elements. Experimental proofs of the As anti-site behavior in ZnO were for the first time attained, i.e., the majority of As atoms are substitutional at the Zn site (SZn), possibly surrounded by two Zn vacancies (VZn). This reinforces the theoretical prediction that As acts as an acceptor in ZnO via the AsZn-2VZn complex formation. The co-doping of ZnO SC with In (donor) and As (acceptor) was addressed. The most striking result is the possible In-As pair formation. Two configurations are proposed for this pair , both with In and As at SZn. A purely In-related defect is also identified. These are preliminary experiments that can serve as guidelines for future and deeper studies. Rare-earths (RE) RE lattice site location, RE surface segregation and optical activation were investigated in Er and Tm implanted ZnO SCs, as a function of annealing temperature, implantation doses and implantation conditions. RE surface segregation and lattice recovery occur for high annealing temperatures, being more pronounced in the low dose implanted crystals. The RE-O clusters formation is suggested for the higher dose implanted samples. Er and Tm optical activation occurs at different annealing temperatures depending on the implantation doses, suggesting that the RE-related emission is associated with defects/impurities in the RE close vicinity that change with the annealings.Correia, João Guilherme Martins, 1962-Wahl, Ulrich, 1961-Repositório da Universidade de LisboaRita, Elisabete Maria Casa Nova Correia, 1976-2010-07-27T08:59:29Z20082008-01-01T00:00:00Zdoctoral thesisinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdftext/xmlhttp://hdl.handle.net/10451/1559enginfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T12:39:32Zoai:repositorio.ulisboa.pt:10451/1559Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T02:25:05.281414Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals
title Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals
spellingShingle Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals
Rita, Elisabete Maria Casa Nova Correia, 1976-
Física
Teses de doutoramento - 2008
title_short Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals
title_full Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals
title_fullStr Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals
title_full_unstemmed Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals
title_sort Properties and local environment of p-type dopants and photoluminescent rare-earths implanted into zon single-crystals
author Rita, Elisabete Maria Casa Nova Correia, 1976-
author_facet Rita, Elisabete Maria Casa Nova Correia, 1976-
author_role author
dc.contributor.none.fl_str_mv Correia, João Guilherme Martins, 1962-
Wahl, Ulrich, 1961-
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Rita, Elisabete Maria Casa Nova Correia, 1976-
dc.subject.por.fl_str_mv Física
Teses de doutoramento - 2008
topic Física
Teses de doutoramento - 2008
description Tese de doutoramento em Física, apresentada à Universidade de Lisboa através da Faculdade de Ciências, 2008
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
2010-07-27T08:59:29Z
dc.type.driver.fl_str_mv doctoral thesis
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10451/1559
url http://hdl.handle.net/10451/1559
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
text/xml
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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repository.mail.fl_str_mv info@rcaap.pt
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