Well Dispersed SnO2 Nanoclusters Preparation and Modulation of Metal-Insulator Transition Induced by Ionic Liquid |
| |
Authors: | Zhong-hu Liu Xing Chen Yi-yu Zhu Si-han Zhao Zhi-qiang Wang Feng Wang Qiang-qiang Meng Lei Zhu Qin-fang Zhang Bao-lin Wang Le-le Fan |
| |
Affiliation: | 1.Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China2.School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China3.School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China |
| |
Abstract: | Tin dioxide (SnO2) has attracted broad interest due to its particular gas-sensor property. Nano- or atom-scale SnO2 material has always been the aim in order to ultimately improve the sensitivity. However, until now, it remains difficult to synthesize SnO2 nanoclusters by using traditional methods. In the present work, we have achieved the preparation of SnO2 nanoclusters by using the cluster beam deposition technique. The obtained nanoclusters were well characterized by high resolution transmission electron microscope HR-TEM. Results indicated the formation of the well-dispersed SnO2 nanoclusters with uniform size distribution (5-7 nm). Furthermore, an obvious metal insulator transition was observed by gating with ionic liquid. Combined with theory calculation, the corresponding mechanism was systematically analyzed from oxygen vacancy induced electron doping. |
| |
Keywords: | SnO2 nanoclusters Ionic liquid Oxygen vacancy Metal-insulator transition |
本文献已被 万方数据 等数据库收录! |
| 点击此处可从《化学物理学报(中文版)》浏览原始摘要信息 |
|
点击此处可从《化学物理学报(中文版)》下载免费的PDF全文 |
|