DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5

Detalhes bibliográficos
Autor(a) principal: Viomar, Aline
Data de Publicação: 2018
Tipo de documento: Tese
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações do UNICENTRO
Texto Completo: http://tede.unicentro.br:8080/jspui/handle/jspui/993
Resumo: Solar energy as a source of renewable energy has grown exponentially with regard to the development of technology and installation of photovoltaic systems, much due to the wide availability of this source coupled with innovative technologies. The dye-sensitized cells are embedded in the array of device options that convert solar energy into electrical energy, with the advantage of being made of biocompatible materials and presenting unparalleled versatility. The main objective of this thesis was to study the insertion of niobium pentoxide in TiO2 cells in order to improve energy conversion efficiency. The Nb2O5 particles were obtained by the Pechini method and the synthesis conditions established by experimental design using the software Design Expert. The results indicated that obtaining spherical particles with a hydrodynamic diameter of 105 nm is possible by employing the molar ratio of ethylene glycol: citric acid of 13: 1 and citric acid: metal 1: 0.1. The characterization by XRD and FTIR proved that the structure obtained was pseudohexagonal. The films were produced using commercial anatase TiO2 and various proportions of Nb2O5 and deposited by doctor blading. The characterization by XRD indicated that the Nb was inserted in the structure of TiO2 which led to the decrease of band gap values as evidenced by UV-Vis.. The IXV curves indicated that cells containing 2 and 5% of Nb2O5 had the best results of conversion efficiency. The results of the Intensity Modulated Photocurrent Spectroscopy and Intensity Modulated Photovoltage Spectroscopy curves indicated that the collection efficiency was higher for TiO2 cells containing 2% Nb2O5.
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spelling Rodrigues, Paulo Rogério Pintohttp://lattes.cnpq.br/1559766893291724063112939-19http://lattes.cnpq.br/5415023379241389Viomar, Aline2019-04-16T13:02:34Z2018-05-28Viomar, Aline. DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5. 2018. 152 f. Tese (Programa de Pós-Graduação em Química - Doutorado) - Universidade Estadual do Centro-Oeste, Guarapuava - PR.http://tede.unicentro.br:8080/jspui/handle/jspui/993Solar energy as a source of renewable energy has grown exponentially with regard to the development of technology and installation of photovoltaic systems, much due to the wide availability of this source coupled with innovative technologies. The dye-sensitized cells are embedded in the array of device options that convert solar energy into electrical energy, with the advantage of being made of biocompatible materials and presenting unparalleled versatility. The main objective of this thesis was to study the insertion of niobium pentoxide in TiO2 cells in order to improve energy conversion efficiency. The Nb2O5 particles were obtained by the Pechini method and the synthesis conditions established by experimental design using the software Design Expert. The results indicated that obtaining spherical particles with a hydrodynamic diameter of 105 nm is possible by employing the molar ratio of ethylene glycol: citric acid of 13: 1 and citric acid: metal 1: 0.1. The characterization by XRD and FTIR proved that the structure obtained was pseudohexagonal. The films were produced using commercial anatase TiO2 and various proportions of Nb2O5 and deposited by doctor blading. The characterization by XRD indicated that the Nb was inserted in the structure of TiO2 which led to the decrease of band gap values as evidenced by UV-Vis.. The IXV curves indicated that cells containing 2 and 5% of Nb2O5 had the best results of conversion efficiency. The results of the Intensity Modulated Photocurrent Spectroscopy and Intensity Modulated Photovoltage Spectroscopy curves indicated that the collection efficiency was higher for TiO2 cells containing 2% Nb2O5.A energia solar como fonte de energia renovável apresentou crescimento exponencial no que diz respeito ao desenvolvimento de tecnologia e instalação de sistemas fotovoltaicos, muito devido a ampla disponibilidade desta fonte aliada a tecnologias inovadoras. As células sensibilizadas por corantes estão inseridas no leque de opções de dispositivos responsáveis pela conversão de energia solar em energia elétrica, com a vantagem de serem fabricadas com materiais biocompatíveis e apresentarem versatilidade incomparável. O principal objetivo deste trabalho foi estudar a inserção de pentóxido de nióbio em células de TiO2 visando o melhoramento da eficiência de conversão de energia. As partículas de Nb2O5 foram obtidas pelo método Pechini e as condições de síntese estabelecidas por planejamento experimental utilizando o software Designe Expert. Os resultados indicaram que a obtenção de partículas esféricas com diâmetro hidrodinâmico de 105 nm é possível empregando a proporção molar de etileno glicol:ácido cítrico de 13:1 e de ácido cítrico:metal 1:0,1. A caracterização por DRX e FTIR comprovaram que a estrutura obtida foi a pseudohexagonal. Os filmes foram produzidos utilizando TiO2 anatase comercial e varias proporções de Nb2O5 e depositados pelo método de doctor blading. A caracterização por DRX indicou que o Nb foi inserido na estrutura de TiO2 o que levou a diminuição dos valores de band gap como comprovado por UV-Vis. As curvas de densidade de corrente versus potencial indicaram que células contendo proporções de 2 e 5% de Nb2O5 apresentaram os melhores resultados de eficiência de conversão. Os resultados de curvas de Espectroscopia de Fotocorrente com Intensidade Modulada e Espectroscopia de Fotovoltagem com Intensidade Modulada indicaram que a eficiência de coleta eletrônica foi maior para células de TiO2 contendo 2% de Nb2O5.Submitted by Fabiano Jucá (fjuca@unicentro.br) on 2019-04-16T13:02:34Z No. of bitstreams: 1 Aline Viomar.pdf: 2473727 bytes, checksum: 3de162bee93bc05ffe0560f0891e5b68 (MD5)Made available in DSpace on 2019-04-16T13:02:34Z (GMT). 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dc.title.por.fl_str_mv DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5
dc.title.alternative.eng.fl_str_mv DEVELOPMENT AND CHARACTERIZATION OF TiO2 AND Nb2O5 DYE SENSITIZED SOLAR CELL
title DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5
spellingShingle DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5
Viomar, Aline
dopagem
nanotecnologia
energia renovável
mistura de óxidos
doping
nanotecnology
renewable energy
oxide mixtures
CIENCIAS EXATAS E DA TERRA::QUIMICA
title_short DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5
title_full DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5
title_fullStr DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5
title_full_unstemmed DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5
title_sort DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5
author Viomar, Aline
author_facet Viomar, Aline
author_role author
dc.contributor.advisor1.fl_str_mv Rodrigues, Paulo Rogério Pinto
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/1559766893291724
dc.contributor.authorID.fl_str_mv 063112939-19
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/5415023379241389
dc.contributor.author.fl_str_mv Viomar, Aline
contributor_str_mv Rodrigues, Paulo Rogério Pinto
dc.subject.por.fl_str_mv dopagem
nanotecnologia
energia renovável
mistura de óxidos
topic dopagem
nanotecnologia
energia renovável
mistura de óxidos
doping
nanotecnology
renewable energy
oxide mixtures
CIENCIAS EXATAS E DA TERRA::QUIMICA
dc.subject.eng.fl_str_mv doping
nanotecnology
renewable energy
oxide mixtures
dc.subject.cnpq.fl_str_mv CIENCIAS EXATAS E DA TERRA::QUIMICA
description Solar energy as a source of renewable energy has grown exponentially with regard to the development of technology and installation of photovoltaic systems, much due to the wide availability of this source coupled with innovative technologies. The dye-sensitized cells are embedded in the array of device options that convert solar energy into electrical energy, with the advantage of being made of biocompatible materials and presenting unparalleled versatility. The main objective of this thesis was to study the insertion of niobium pentoxide in TiO2 cells in order to improve energy conversion efficiency. The Nb2O5 particles were obtained by the Pechini method and the synthesis conditions established by experimental design using the software Design Expert. The results indicated that obtaining spherical particles with a hydrodynamic diameter of 105 nm is possible by employing the molar ratio of ethylene glycol: citric acid of 13: 1 and citric acid: metal 1: 0.1. The characterization by XRD and FTIR proved that the structure obtained was pseudohexagonal. The films were produced using commercial anatase TiO2 and various proportions of Nb2O5 and deposited by doctor blading. The characterization by XRD indicated that the Nb was inserted in the structure of TiO2 which led to the decrease of band gap values as evidenced by UV-Vis.. The IXV curves indicated that cells containing 2 and 5% of Nb2O5 had the best results of conversion efficiency. The results of the Intensity Modulated Photocurrent Spectroscopy and Intensity Modulated Photovoltage Spectroscopy curves indicated that the collection efficiency was higher for TiO2 cells containing 2% Nb2O5.
publishDate 2018
dc.date.issued.fl_str_mv 2018-05-28
dc.date.accessioned.fl_str_mv 2019-04-16T13:02:34Z
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dc.identifier.citation.fl_str_mv Viomar, Aline. DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5. 2018. 152 f. Tese (Programa de Pós-Graduação em Química - Doutorado) - Universidade Estadual do Centro-Oeste, Guarapuava - PR.
dc.identifier.uri.fl_str_mv http://tede.unicentro.br:8080/jspui/handle/jspui/993
identifier_str_mv Viomar, Aline. DESENVOLVIMENTO E CARACTERIZAÇÃO DE CÉLULA SOLAR SENSIBILIZADA POR CORANTES COMPOSTA DE TiO2 e Nb2O5. 2018. 152 f. Tese (Programa de Pós-Graduação em Química - Doutorado) - Universidade Estadual do Centro-Oeste, Guarapuava - PR.
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dc.publisher.initials.fl_str_mv UNICENTRO
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Unicentro::Departamento de Ciências Exatas e de Tecnologia
publisher.none.fl_str_mv Universidade Estadual do Centro-Oeste
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