Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis

Detalhes bibliográficos
Autor(a) principal: Ibrahim, A. Sulthan
Data de Publicação: 2022
Outros Autores: Alex, Kevin V., Latha, M. Bhakya, Kamakshi, K., Sathish, S., Silva, José Pedro Basto, Sekhar, K. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/81287
Resumo: In this work, we have investigated the structure, morphology, photoluminescence, photocatalytic and photocurrent properties of ZnO thin films as a function of their film thickness (tZnO) fabricated via ultrasonic spray pyrolysis technique. The X-Ray diffraction patterns exhibited the formation of polycrystalline wurtzite phase of ZnO. Scanning electron microscopy images showed the uniform morphology with nanorod structure. The photosensitivity and photocatalytic efficiency are found to be optimum at tZnO = 1200 nm and are attributed to the improved photogeneration of charge carriers and higher concentration of oxygen vacancies. A direct correlation is established between the photosensitivity and photodegradation process. The incident photon-to-electron conversion efficiency (IPCE) and photocatalytic efficiency for the ZnO film at tZnO = 1200 nm are estimated to be 31.5% and 100% respectively. The obtained result suggests that ZnO thin films are potential candidates for applications in various optoelectronic devices.
id RCAP_9b19d57785003ffe8ab168e25f5324f4
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/81287
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str
spelling Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysisCiências Naturais::Ciências FísicasIn this work, we have investigated the structure, morphology, photoluminescence, photocatalytic and photocurrent properties of ZnO thin films as a function of their film thickness (tZnO) fabricated via ultrasonic spray pyrolysis technique. The X-Ray diffraction patterns exhibited the formation of polycrystalline wurtzite phase of ZnO. Scanning electron microscopy images showed the uniform morphology with nanorod structure. The photosensitivity and photocatalytic efficiency are found to be optimum at tZnO = 1200 nm and are attributed to the improved photogeneration of charge carriers and higher concentration of oxygen vacancies. A direct correlation is established between the photosensitivity and photodegradation process. The incident photon-to-electron conversion efficiency (IPCE) and photocatalytic efficiency for the ZnO film at tZnO = 1200 nm are estimated to be 31.5% and 100% respectively. The obtained result suggests that ZnO thin films are potential candidates for applications in various optoelectronic devices.This study has been partially supported by Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UIDB/FIS/04650/2020 (JPBS) and DST SERB Project ECR/2017/002537(K.K.). Author KVA acknowledges DST, Govt. of India for the Inspire fellowship (IF170601).SpringerUniversidade do MinhoIbrahim, A. SulthanAlex, Kevin V.Latha, M. BhakyaKamakshi, K.Sathish, S.Silva, José Pedro BastoSekhar, K. C.20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/81287engIbrahim, A.S., Alex, K.V., Latha, M.B. et al. Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis. Discov Mater 2, 10 (2022). https://doi.org/10.1007/s43939-022-00031-52730-772710.1007/s43939-022-00031-5https://link.springer.com/article/10.1007/s43939-022-00031-5info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:05:33ZPortal AgregadorONG
dc.title.none.fl_str_mv Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis
title Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis
spellingShingle Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis
Ibrahim, A. Sulthan
Ciências Naturais::Ciências Físicas
title_short Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis
title_full Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis
title_fullStr Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis
title_full_unstemmed Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis
title_sort Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis
author Ibrahim, A. Sulthan
author_facet Ibrahim, A. Sulthan
Alex, Kevin V.
Latha, M. Bhakya
Kamakshi, K.
Sathish, S.
Silva, José Pedro Basto
Sekhar, K. C.
author_role author
author2 Alex, Kevin V.
Latha, M. Bhakya
Kamakshi, K.
Sathish, S.
Silva, José Pedro Basto
Sekhar, K. C.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Ibrahim, A. Sulthan
Alex, Kevin V.
Latha, M. Bhakya
Kamakshi, K.
Sathish, S.
Silva, José Pedro Basto
Sekhar, K. C.
dc.subject.por.fl_str_mv Ciências Naturais::Ciências Físicas
topic Ciências Naturais::Ciências Físicas
description In this work, we have investigated the structure, morphology, photoluminescence, photocatalytic and photocurrent properties of ZnO thin films as a function of their film thickness (tZnO) fabricated via ultrasonic spray pyrolysis technique. The X-Ray diffraction patterns exhibited the formation of polycrystalline wurtzite phase of ZnO. Scanning electron microscopy images showed the uniform morphology with nanorod structure. The photosensitivity and photocatalytic efficiency are found to be optimum at tZnO = 1200 nm and are attributed to the improved photogeneration of charge carriers and higher concentration of oxygen vacancies. A direct correlation is established between the photosensitivity and photodegradation process. The incident photon-to-electron conversion efficiency (IPCE) and photocatalytic efficiency for the ZnO film at tZnO = 1200 nm are estimated to be 31.5% and 100% respectively. The obtained result suggests that ZnO thin films are potential candidates for applications in various optoelectronic devices.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/81287
url https://hdl.handle.net/1822/81287
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ibrahim, A.S., Alex, K.V., Latha, M.B. et al. Effect of the thickness on the photocatalytic and the photocurrent properties of ZnO films deposited by spray pyrolysis. Discov Mater 2, 10 (2022). https://doi.org/10.1007/s43939-022-00031-5
2730-7727
10.1007/s43939-022-00031-5
https://link.springer.com/article/10.1007/s43939-022-00031-5
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1777303679627427840

Registros relacionados