Efeito do agente precursor na transparência de filmes nanoestruturados de NiO

• Ano de defesa: 2015
• Autor(a) principal: Lima, Paulo Vitor Silva de
• Orientador(a): Souza Junior, Edvaldo Alves de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Sergipe
• Programa de Pós-Graduação: Pós-Graduação em Física
• País: Brasil
• Palavras-chave em Português: Física; Óxido de níquel; Pirólise; Spray pirólise; TCO's; Spray pyrolysis; Nickel oxide
• Área do conhecimento CNPq: CIENCIAS EXATAS E DA TERRA::FISICA
• Link de acesso: https://ri.ufs.br/handle/riufs/5373

In this work, nickel oxide films were prepared from the Spray Pyrolysis Technique, due to its wide application in the manufacture of various electronic devices and intense study of its semiconducting properties. The films were obtained from a precursor solution containing 0.2 mol / L NiCl2 dissolved in distilled water containing sucrose as a chelating agent, deposited on a glass substrate temperature of 450 ° C. The sucrose concentration in the solution ranged from 0 to 10 × 10-3 mol/L and its effects on structural, morphological and optical properties were studied using the techniques of X-ray diffraction, scanning electron microscopy and UV-vis spectroscopy. It was observed that, before the concentration of sucrose, the films have different optical characteristics (transparent or opaque) for amorphous or crystalline films.