• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Symposium on Microcrystalline and Nanocrystalline Semiconductors-1998 held November 30-December 3, 1998, Boston, Massachusetts, U.S.A. >Thiol-capped CdSe and CdTe nanoclusters: synthesis by a wet chemical route, structural and optical properties
【24h】

Thiol-capped CdSe and CdTe nanoclusters: synthesis by a wet chemical route, structural and optical properties

机译：巯基封端的CdSe和CdTe纳米团簇：通过湿化学路线，结构和光学性质进行合成

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

CdSe and CdTe nanoclusters were formed in aqueous solutions at moderate temperatures by a wet chemical route in the presence of thiols as effective stabilizing agents. The nature of the stabilizing agent (thioalcohols or thioacids) had an important influence on the particle size and largely determined the photoluminescence properties. The nanoclusters were characterized by means of UV-vis absorption and photoluminescence spectroscopy, powder X-ray diffraction, high resolution transmission electron microscopy, and extended X-ray absorption fine structure measurements. CdSe and CdTe nanoclusters were crystalline, in the cubic zincblende phase, with mean sizes in the range of 2 to 5 nm depending on the preparative conditions and the post-preparative size-selective fractionation, and showed pronounced electronic transitions in the absorption spectra. Thioglycerol-stabilized CdTe nanoclusters possessed sharp band-egde photoluminescence being tunable with particle size.
机译：CdSe和CdTe纳米团簇是在水溶液中于适度温度下通过湿化学途径在硫醇作为有效稳定剂的存在下形成的。稳定剂（硫醇或硫代酸）的性质对粒径有重要影响，并在很大程度上决定了光致发光性能。通过紫外可见吸收和光致发光光谱，粉末X射线衍射，高分辨率透射电子显微镜和扩展的X射线吸收精细结构测量来表征纳米团簇。 CdSe和CdTe纳米团簇呈立方闪锌矿型结晶，其平均粒径在2至5 nm之间，取决于制备条件和制备后的粒径选择性分级分离，并在吸收光谱中显示出明显的电子跃迁。硫甘油稳定的CdTe纳米团簇具有清晰的带状光致发光，可随粒径调节。

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