Efecto de la temperatura de síntesis en el tamaño y ancho de banda prohibida de nanopartículas de Zno producidas por sol-gel

• Autor: Castillo Jauregui, Luis Angel
• Formato: tesis de grado
• Fecha de Publicación: 2011
• Institución: Universidad Nacional de Trujillo
• Repositorio: UNITRU-Tesis
• Lenguaje: español
• OAI Identifier: oai:dspace.unitru.edu.pe:20.500.14414/8151
• Enlace del recurso: https://hdl.handle.net/20.500.14414/8151
• Nivel de acceso: acceso abierto
• Materia: Nanopartículas, Oxido de Zinc, Banda prohibida, Sol-Gel

In this work a systematic investigation on the effect synthesis of temperature_x000D_ (from 0 to 40°C) and ageing time on the size and width of the energy band gap of_x000D_ ZnO nanoparticles, which have been synthesized by a modified Sol-Gel method, is_x000D_ reported. The optical properties of ZnO nanoparticles have been evaluated by_x000D_ their UV-vis absorption spectra, from which the size and energy band gap were_x000D_ obtained. The average of nanoparticle size ranged from 2.06nm to 6.78nm as the_x000D_ temperature was increased from 0ºC to 40°C, while the band gap decreases from_x000D_ 3.99eV to 3.46eV, respectively. A distribution of nanoparticle particle size also was_x000D_ observed for all temperatures and ageing times