Effect of Heat Treatment on the Photoluminescent and Structural Properties of Europium-Doped Yttrium Oxide
DOI:
https://doi.org/10.29105/qh15.02-527Palabras clave:
Óxido de itrio, Europio, Tratamiento térmico, Métodos de caracterizaciónResumen
Se realizó la síntesis y análisis de polvos de óxido de itrio dopado con europio (Eu0.04Y0.96)2O3 recién sintetizados y tratados térmicamente utilizando fotoluminiscencia, DRX, MEB, espectroscopía de dispersión de energía de rayos X, espectroscopía de electrones Auger y XPS. Los resultados demostraron un aumento de 12.5 veces en la intensidad luminiscente después del tratamiento térmico a 1273 K durante 30 min, en comparación con polvos recién sintetizados medidos a 273 K. La DRX reveló que los polvos recién sintetizados exhibían un alto grado de tensión en la red cristalina, la cual se alivió sustancialmente con el tratamiento térmico, resultando en picos notablemente más agudos y definidos, indicativos de una cristalinidad mejorada. El análisis por MEB correlacionó el aumento en la intensidad de PL con una reducción en el tamaño de los cristalitos tras el tratamiento térmico, sugiriendo que la optimización morfológica contribuye a propiedades de luminiscencia superiores. Los espectros EDS confirmaron la presencia solo de Eu, O e Y en ambas muestras recién sintetizadas y tratadas térmicamente, sin elementos de impureza detectables. Notablemente, la aparición de una señal de europio en el espectro AES de los polvos tratados térmicamente sugiere fuertemente un aumento en la incorporación de europio o en su concentración superficial tras el tratamiento a 1273 K durante 30 min, proporcionando una explicación mecanicista para el aumento observado en la PL.
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Derechos de autor 2026 María de Jesús Martínez Carreón , Raquel Murillo Ortiz , Azael Adrián Cavazos Jaramillo , María Magdalena Del Ángel Sánchez , Mitchel Abraham Ruiz Robles, Eduardo G. Pérez Tijerina
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
