• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Luminescence of nanostructured Eu3(+)/ZnO mixed films prepared by Electrodeposition
【24h】

Luminescence of nanostructured Eu3(+)/ZnO mixed films prepared by Electrodeposition

机译：电沉积制备的纳米结构Eu3（+）/ ZnO混合膜的发光

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

ZnO/Eu mixed films have been prepared by electrochemical precipitation at an electrode surface. The films present a composite nanostructure with rod-shaped columns of Eu3+-doped ZnO surrounded by a Eu/ZnO mixed basal layer. The fraction of basal layer increases rapidly with europium concentration in the deposition bath. The contribution of each component on layer photolumineseence has been distinguished by studying separately rod-rich and basal-layer-rich films. The films have been studied before and after annealing treatments in various atmospheres. Under UV light excitation, two photoluminescent ZnCi emissions are observed: the exciton emission in the UV and a visible emission which is cancelled after a heating treatment at 400 degrees C in air. The sharp 4f-4f transition emissions of Bull can be directly excited at 464 nm and are intense after an annealing treatment at 400 or 800 degrees C in air. A lifetime of 450 mu s is measured for the 5 Do emitting level. Eu3+ emission is also observed under ZnO excitation below 380 nm, but after film annealing, when defect effects are minimized.
机译：ZnO / Eu混合膜是通过在电极表面进行电化学沉淀制备的。薄膜呈现出一种复合纳米结构，其棒状的Eu3 +掺杂的ZnO柱被Eu / ZnO混合基础层包围。随着沉积浴中euro浓度的增加，基底层的分数迅速增加。通过分别研究富含棒的和富含基底层的膜，已经区分了每种成分对光致发光层的贡献。已经在各种气氛下进行退火处理之前和之后研究了该膜。在紫外光激发下，观察到两种光致发光的ZnCi发射：紫外光中的激子发射和可见光发射，该可见光在空气中于400摄氏度进行热处理后被抵消。 Bull的4f-4f跃迁清晰的发射光可以在464 nm处直接激发，并且在空气中在400或800摄氏度进行退火处理后强度很高。 5 Do发射水平的寿命为450μs。在低于380 nm的ZnO激发下也观察到Eu3 +发射，但是在薄膜退火之后，当缺陷效应最小化时。

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