Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method

Detalhes bibliográficos
Autor(a) principal: Veissid,N.
Data de Publicação: 1999
Outros Autores: An,C.Y., Silva,A. Ferreira da, Souza,J.I. Pinto de
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=S1516-14391999000400007
Resumo: The bandgap energy as a function of temperature has been determined for lead iodide. The monocrystal was obtained in a vacuum sealed quartz ampoule inside a vertical furnace by Bridgman's method. The optical transmittance measurement enables to evaluate the values of Eg. By a fitting procedure of Eg as a function of temperature is possible to extract the parameters that govern its behavior. The variation of Eg with temperature was determined as: Eg(T) = Eg(0) - <FONT FACE="Symbol">a</FONT>T2/(<FONT FACE="Symbol">a</FONT> + T), with: Eg(0) = (2.435 <FONT FACE="Symbol">±</FONT> 0.008) eV, <FONT FACE="Symbol">a</FONT> = (8.7 <FONT FACE="Symbol">±</FONT> 1.3) x 10-4 eV/K and <FONT FACE="Symbol">a</FONT> = (192 <FONT FACE="Symbol">±</FONT> 90) K. The bandgap energy of lead iodide at room temperature was found to be 2.277 <FONT FACE="Symbol">±</FONT> 0.007 eV.
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spelling Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Methodoptical propertieslead iodideBridgman's MethodThe bandgap energy as a function of temperature has been determined for lead iodide. The monocrystal was obtained in a vacuum sealed quartz ampoule inside a vertical furnace by Bridgman's method. The optical transmittance measurement enables to evaluate the values of Eg. By a fitting procedure of Eg as a function of temperature is possible to extract the parameters that govern its behavior. The variation of Eg with temperature was determined as: Eg(T) = Eg(0) - <FONT FACE="Symbol">a</FONT>T2/(<FONT FACE="Symbol">a</FONT> + T), with: Eg(0) = (2.435 <FONT FACE="Symbol">±</FONT> 0.008) eV, <FONT FACE="Symbol">a</FONT> = (8.7 <FONT FACE="Symbol">±</FONT> 1.3) x 10-4 eV/K and <FONT FACE="Symbol">a</FONT> = (192 <FONT FACE="Symbol">±</FONT> 90) K. The bandgap energy of lead iodide at room temperature was found to be 2.277 <FONT FACE="Symbol">±</FONT> 0.007 eV.ABM, ABC, ABPol1999-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14391999000400007Materials Research v.2 n.4 1999reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14391999000400007info:eu-repo/semantics/openAccessVeissid,N.An,C.Y.Silva,A. Ferreira daSouza,J.I. Pinto deeng2000-01-28T00:00:00Zoai:scielo:S1516-14391999000400007Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2000-01-28T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method
title Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method
spellingShingle Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method
Veissid,N.
optical properties
lead iodide
Bridgman's Method
title_short Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method
title_full Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method
title_fullStr Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method
title_full_unstemmed Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method
title_sort Gap energy studied by optical transmittance in lead iodide monocrystals grown by Bridgman's Method
author Veissid,N.
author_facet Veissid,N.
An,C.Y.
Silva,A. Ferreira da
Souza,J.I. Pinto de
author_role author
author2 An,C.Y.
Silva,A. Ferreira da
Souza,J.I. Pinto de
author2_role author
author
author
dc.contributor.author.fl_str_mv Veissid,N.
An,C.Y.
Silva,A. Ferreira da
Souza,J.I. Pinto de
dc.subject.por.fl_str_mv optical properties
lead iodide
Bridgman's Method
topic optical properties
lead iodide
Bridgman's Method
description The bandgap energy as a function of temperature has been determined for lead iodide. The monocrystal was obtained in a vacuum sealed quartz ampoule inside a vertical furnace by Bridgman's method. The optical transmittance measurement enables to evaluate the values of Eg. By a fitting procedure of Eg as a function of temperature is possible to extract the parameters that govern its behavior. The variation of Eg with temperature was determined as: Eg(T) = Eg(0) - <FONT FACE="Symbol">a</FONT>T2/(<FONT FACE="Symbol">a</FONT> + T), with: Eg(0) = (2.435 <FONT FACE="Symbol">±</FONT> 0.008) eV, <FONT FACE="Symbol">a</FONT> = (8.7 <FONT FACE="Symbol">±</FONT> 1.3) x 10-4 eV/K and <FONT FACE="Symbol">a</FONT> = (192 <FONT FACE="Symbol">±</FONT> 90) K. The bandgap energy of lead iodide at room temperature was found to be 2.277 <FONT FACE="Symbol">±</FONT> 0.007 eV.
publishDate 1999
dc.date.none.fl_str_mv 1999-10-01
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=S1516-14391999000400007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14391999000400007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14391999000400007
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.2 n.4 1999
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
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