From Tunneling to Hopping: A Comprehensive Investigation of Charge Transport Mechanism in Molecular Junctions Based on Oligo(p-phenylene ethynylene)s
文献类型：期刊论文
| 作者 | Lu, Qi1,2; Liu, Ke1; Zhang, Hongming1; Du, Zhibo1; Wang, Xianhong1; Wang, Fosong1 |
| 刊名 | ACS NANO
 |
| 出版日期 | 2009-12-01 |
| 卷号 | 3期号:12页码:3861-3868 |
| 关键词 | Oligo(P-phenylene Ethynylene)s Charge Transport Mechanism Tunneling Conduction Hopping Conduction Scanning Tunneling Microscopy Conducting Probe Atomic Force Microscopy Single Molecular Resistance |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/nn9012687 |
| 英文摘要 | The charge transport mechanism of oligo(p-phenylene ethynylene)s with lengths ranging from 0.98 to 5.11 nm was investigated using modified scanning tunneling microscopy break junction and conducting probe atomic force microscopy methods. The methods were based on observing the length dependence of molecular resistance at single molecule level and the current-voltage characteristics in a wide length distribution. An intrinsic transition from tunneling to hopping charge transport mechanism was observed near 2.75 nm. A new transitional zone was observed in the long length molecular wires compared to short ones. This was not a simple transition between direct tunneling and field emission, which may provide new insights into transport mechanism investigations. Theoretical calculations provided an essential explanation for these phenomena in terms of molecular electronic structures. |
| 语种 | 英语 |
| WOS记录号 | WOS:000272846000016 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/68221]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Xianhong |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Qi,Liu, Ke,Zhang, Hongming,et al. From Tunneling to Hopping: A Comprehensive Investigation of Charge Transport Mechanism in Molecular Junctions Based on Oligo(p-phenylene ethynylene)s[J]. ACS NANO,2009,3(12):3861-3868. |
| APA | Lu, Qi,Liu, Ke,Zhang, Hongming,Du, Zhibo,Wang, Xianhong,&Wang, Fosong.(2009).From Tunneling to Hopping: A Comprehensive Investigation of Charge Transport Mechanism in Molecular Junctions Based on Oligo(p-phenylene ethynylene)s.ACS NANO,3(12),3861-3868. |
| MLA | Lu, Qi,et al."From Tunneling to Hopping: A Comprehensive Investigation of Charge Transport Mechanism in Molecular Junctions Based on Oligo(p-phenylene ethynylene)s".ACS NANO 3.12(2009):3861-3868. |
入库方式： OAI收割
来源：化学研究所
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