材料科学
结晶
透射电子显微镜
带隙
衍射
分析化学(期刊)
光学
光电子学
纳米技术
化学工程
化学
色谱法
物理
工程类
作者
J. Alvarado‐Rivera,Carlos Guadalupe Pérez Hernández,María Elena Zayas,M. E. Álvarez‐Ramos
出处
期刊:InTech eBooks
[InTech]
日期:2018-06-06
标识
DOI:10.5772/intechopen.73295
摘要
In this study, a series of glasses of the system xCdO-10TeO 2 -(90-x)GeO 2 were fabricated, varying the modifier oxide content from 10 to 80 wt%.According to XRD analysis, partial crystallization occurred for the glass 60CdO.10TeO 2 .30GeO 2 presenting the formation of GeO 2 and CdTeO 3 ; the 70CdO.10TeO 2 .20GeO 2 glass shows sharp diffraction peaks corresponding to the Cd 3 Al 2 Ge 3 O 12 garnet crystalline phase.Transmission electron microscopy showed that the garnet crystals have sizes below 20 nm.At the highest concentration of CdO (80 wt%), a transparent orange glass can be obtained, and this sample can be identified as an inverted glass where CdO participates as a network former.The optical band gap of the glasses decreases as CdO content increases from 3.91 to 3.0 eV.In general, all glasses show a typical broad emission when excited with UV light (325 nm); chromatic coordinates were calculated and pointed out the presence of emissions in the white, green, and yellow regions.In summary, the obtained glasses are a promising material for IR technologies, nonlinear optics, and design of solid state lighting devices.
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