Produção de células solares de TiO2/Nb sensibilizadas com corantes naturais

Detalhes bibliográficos
Ano de defesa: 2022
Autor(a) principal: OLIVEIRA, MARCEL RICARDO NOGUEIRA DE lattes
Orientador(a): Gallina, André Lazarin lattes
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Estadual do Centro-Oeste
Programa de Pós-Graduação: Programa de Pós-Graduação em Bioenergia (Mestrado)
Departamento: Unicentro::Departamento de Ciências Agrárias e Ambientais
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://tede.unicentro.br:8080/jspui/handle/jspui/2140
Resumo: Dye sensitized solar cells (DSSC) are promisors devices for solar energy conversion. They are produced by the use of a semiconductor oxide and photosensitive material. To improve the photoconversion energy efficiency, a mix of oxides is applied and dyes extracted from natural products can be used when the objective is to produce a low-cost system. This work aims to develop and evaluate a DSSC with Ti and Nb sensitized with dyes extracted from Capsicum Anuum and Curcuma Longa. For the inorganic analysis, Scanning Electron Microscopy (SEM), X-ray Fluorescence (XRF), and X-ray Diffraction (XRD) will be used. To electrochemical analysis, j-V curves, photochronoamperometic measurement (j-t), and Open Circuito Potential (OCP) will be performed. As a result of the corresponding partial analyzes during the oxide synthesis, it was observed that is possible to produce Ti/Nb particles by the Pechini methodology, with high crystallinity and mix of rutile and anatase forms. Electrochemical results showed an improving in photoconversion energy cell efficiency with 25% to Curcuma longa and 12% to Capsium Anuum when Nb was inserted.