Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films

Detalhes bibliográficos
Autor(a) principal: Herrera,S.
Data de Publicação: 2006
Outros Autores: Ramos,C. M., Patiño,R., Peña,J. L., Cauich,W., Oliva,A. I.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600068
Resumo: Cadmium sulphide (CdS) thin films deposited on indium tin oxide (ITO) substrates were prepared by the chemical bath deposition technique at different values of pH and pNH3. This was made in order to analyze the influence of the initial chemical composition of the bath on some physical properties of the final CdS films, used as optical windows for solar cells. The mechanism proposed in the literature for this deposition involves the tetra-ammonium cadmium (II) complex, Cd(NH$_{3})_{4}^{2+}$, at the start of the reaction. Following this mechanism, the change in the concentration of Cd(NH$_{3})_{4}^{2+}$ gives a variation in the rate of deposition with the corresponding modification in the quality of the film. Therefore, the predominance zone diagram of Cd2 + species in solution as a function of the values of pH and pNH3 was used to analyze the reasons why the CdS/ITO thin films are favored in just a narrow range of ammonium and hydroxide concentrations. To obtain useful films, the results showed that low ammonium concentrations must be avoided at high pH values as well as high ammonium concentrations at lower pH values.
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spelling Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin filmsChemical bath analysisCadmium sulphideSemiconductor filmPredominance diagramsCadmium sulphide (CdS) thin films deposited on indium tin oxide (ITO) substrates were prepared by the chemical bath deposition technique at different values of pH and pNH3. This was made in order to analyze the influence of the initial chemical composition of the bath on some physical properties of the final CdS films, used as optical windows for solar cells. The mechanism proposed in the literature for this deposition involves the tetra-ammonium cadmium (II) complex, Cd(NH$_{3})_{4}^{2+}$, at the start of the reaction. Following this mechanism, the change in the concentration of Cd(NH$_{3})_{4}^{2+}$ gives a variation in the rate of deposition with the corresponding modification in the quality of the film. Therefore, the predominance zone diagram of Cd2 + species in solution as a function of the values of pH and pNH3 was used to analyze the reasons why the CdS/ITO thin films are favored in just a narrow range of ammonium and hydroxide concentrations. To obtain useful films, the results showed that low ammonium concentrations must be avoided at high pH values as well as high ammonium concentrations at lower pH values.Sociedade Brasileira de Física2006-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600068Brazilian Journal of Physics v.36 n.3b 2006reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332006000600068info:eu-repo/semantics/openAccessHerrera,S.Ramos,C. M.Patiño,R.Peña,J. L.Cauich,W.Oliva,A. I.eng2006-11-29T00:00:00Zoai:scielo:S0103-97332006000600068Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2006-11-29T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films
title Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films
spellingShingle Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films
Herrera,S.
Chemical bath analysis
Cadmium sulphide
Semiconductor film
Predominance diagrams
title_short Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films
title_full Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films
title_fullStr Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films
title_full_unstemmed Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films
title_sort Analysis of the chemical bath and its effect on the physical properties of CdS/ITO thin films
author Herrera,S.
author_facet Herrera,S.
Ramos,C. M.
Patiño,R.
Peña,J. L.
Cauich,W.
Oliva,A. I.
author_role author
author2 Ramos,C. M.
Patiño,R.
Peña,J. L.
Cauich,W.
Oliva,A. I.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Herrera,S.
Ramos,C. M.
Patiño,R.
Peña,J. L.
Cauich,W.
Oliva,A. I.
dc.subject.por.fl_str_mv Chemical bath analysis
Cadmium sulphide
Semiconductor film
Predominance diagrams
topic Chemical bath analysis
Cadmium sulphide
Semiconductor film
Predominance diagrams
description Cadmium sulphide (CdS) thin films deposited on indium tin oxide (ITO) substrates were prepared by the chemical bath deposition technique at different values of pH and pNH3. This was made in order to analyze the influence of the initial chemical composition of the bath on some physical properties of the final CdS films, used as optical windows for solar cells. The mechanism proposed in the literature for this deposition involves the tetra-ammonium cadmium (II) complex, Cd(NH$_{3})_{4}^{2+}$, at the start of the reaction. Following this mechanism, the change in the concentration of Cd(NH$_{3})_{4}^{2+}$ gives a variation in the rate of deposition with the corresponding modification in the quality of the film. Therefore, the predominance zone diagram of Cd2 + species in solution as a function of the values of pH and pNH3 was used to analyze the reasons why the CdS/ITO thin films are favored in just a narrow range of ammonium and hydroxide concentrations. To obtain useful films, the results showed that low ammonium concentrations must be avoided at high pH values as well as high ammonium concentrations at lower pH values.
publishDate 2006
dc.date.none.fl_str_mv 2006-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600068
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600068
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-97332006000600068
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 Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Brazilian Journal of Physics v.36 n.3b 2006
reponame:Brazilian Journal of Physics
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Brazilian Journal of Physics
collection Brazilian Journal of Physics
repository.name.fl_str_mv Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br
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