引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 465次   下载 286 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Direct View of Cr Atoms Doped in Anatase TiO2(001) Thin Film
Hao-qi Tangy,Yue Liny,Zheng-wang Chengy,Xue-feng Cui,Bing Wang*
Author NameAffiliationE-mail
Hao-qi Tangy Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics, Synergetic Innovation Center of Quantum Information & Quantum Physics and Key Laboratory of Strong-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China, Hefei 230026, China  
Yue Liny Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics, Synergetic Innovation Center of Quantum Information & Quantum Physics and Key Laboratory of Strong-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China, Hefei 230026, China  
Zheng-wang Chengy Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics, Synergetic Innovation Center of Quantum Information & Quantum Physics and Key Laboratory of Strong-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China, Hefei 230026, China  
Xue-feng Cui Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics, Synergetic Innovation Center of Quantum Information & Quantum Physics and Key Laboratory of Strong-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China, Hefei 230026, China  
Bing Wang* Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics, Synergetic Innovation Center of Quantum Information & Quantum Physics and Key Laboratory of Strong-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China, Hefei 230026, China bwang@ustc.edu.cn 
Abstract:
Imaging the doping elements is critical for understanding the photocatalytic activity of doped TiO2 thin film. But it is still a challenge to characterize the interactions between the dopants and the TiO2 lattice at the atomic level. Here, we use high angle annular dark-field/annular bright-field scanning transmission electron microscope (HAADF/ABF-STEM) combined with electron energy loss spectroscopy (EELS) to directly image the individual Cr atoms doped in anatase TiO2(001) thin film from [100] direction. The Cr dopants, which are clearly imaged through the atomic-resolution EELS mappings while can not be seen by HADDF/ABF-STEM, occupy both the substitutional sites of Ti atoms and the interstitial sites of TiO2 matrix. Most of them preferentially locate at the substitutional sites of Ti atoms. These results provide the direct evidence for the doping structure of Cr-doped A-TiO2 thin film at the atomic level and also prove the EELS mapping is an excellent technique for characterizing the doped materials.
Key words:  Anatase TiO2  Cr dopants  Scanning transmission electron microscope  Electron energy loss spectroscopy  Pulsed laser deposition
FundProject:These authors contributed equally to this work.
Cr掺杂锐钛矿型TiO2(001)薄膜中Cr原子的直接观测
唐浩奇,林岳,程正旺,崔雪峰,王兵*
摘要:
关键词:  
DOI:10.1063/1674-0068/31/cjcp1705103
分类号: