• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Symposium on Spatially Resolved Characterization of Local Phenomena in Materials and Nanostructures Dec 2-6, 2002 Boston, Massachusetts, U.S.A. >Effect of Thermal and Mechanical Treatments on the Cathodoluminescence of Tin and Titanium Oxides
【24h】

Effect of Thermal and Mechanical Treatments on the Cathodoluminescence of Tin and Titanium Oxides

机译：热处理和机械处理对锡和钛氧化物的阴极发光的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The luminescence of titanium oxide and tin oxide has been investigated by Cathodoluminescence in the SEM, as a function of the structural changes induced by thermal treatments. The evolution of the luminescence of TiO_2 rutile, anatase and mixture phase with the annealing temperature is related to the process of thermal induced grain texture and to transition of metastables phases to the stable rutile. The emission band is peaked at 480 nm for the composite phase and at 580 nm for anatase and rutile phases respectively. A broad band in the 520-560 nm region is present in the spectra of both anatase and rutile phase. Thermal annealing leads to a red shift of the luminescence emission, with the emission band peaked at around 820 nm. In sintered tin oxide the main emission bands appear centered at about 480 nm and 630 nm. The intensity of these bands increases with annealing temperature up to 1200℃, whereas for samples annealed at 1500℃ these emissions are quenched. Mechanical ball milling has been used to produce nanocrystalline SnO_2 grains to investigate the influence of the presence of nanocrystals on the CL emission.
机译：氧化钛和氧化锡的发光已通过SEM中的阴极发光研究，作为热处理引起的结构变化的函数。 TiO_2金红石，锐钛矿和混合相的发光随退火温度的变化与热诱导晶粒织构的过程以及亚稳态相向稳定金红石的转变有关。对于复合相，发射带在480 nm处达到峰值，对于锐钛矿相和金红石相，在580 nm处达到峰值。锐钛矿和金红石相的光谱中均存在520-560 nm区域的宽带。热退火导致发光发射红移，发射带在820 nm附近达到峰值。在烧结的氧化锡中，主要的发射带集中在大约480 nm和630 nm处。这些带的强度随着退火温度升高至1200℃而增加，而对于在1500℃退火的样品，这些发射被淬灭。机械球磨已用于生产纳米晶体SnO_2晶粒，以研究纳米晶体的存在对CL发射的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号