THE year 2011 marks the 10th anniversary of China’s accession to the World Trade Organization (WTO). Benefiting from the rules of the WTO, China’s foreign trade and economic strength have fueled its rapid developmen...THE year 2011 marks the 10th anniversary of China’s accession to the World Trade Organization (WTO). Benefiting from the rules of the WTO, China’s foreign trade and economic strength have fueled its rapid development during the past decade. The rules propelled China to not only undertake further reform and opening-up, but also improve its market economy system. China Today (CT) were granted an exclusive interview with展开更多
By applying non-equilibrium Green's functions (NEGF) in combination with the density functional theory (DFT), we investigate the electronic transport properties of molecular junctions constructed by OPE derivative...By applying non-equilibrium Green's functions (NEGF) in combination with the density functional theory (DFT), we investigate the electronic transport properties of molecular junctions constructed by OPE derivatives with different side groups combined C60 molecules. The results show that the side groups play an important role in the properties of electron transport. Negative differential resistance (NDR) is observed in such devices. Especially for the molecule with electron-donating group ( OCH3), two NDR appear at different bias voltage regions. And the mechanism is proposed for the NDR behavior, owing to the shift of the molecular orbitals caused by the change in molecule charge.展开更多
文摘THE year 2011 marks the 10th anniversary of China’s accession to the World Trade Organization (WTO). Benefiting from the rules of the WTO, China’s foreign trade and economic strength have fueled its rapid development during the past decade. The rules propelled China to not only undertake further reform and opening-up, but also improve its market economy system. China Today (CT) were granted an exclusive interview with
基金supported by the Independent Innovative Natural Science Foundation of Shandong University (Grant No. 2009TS097)the Natural Science Foundation of Shandong Province of China (Grant Nos. ZR2009-AL004 and ZR2010AM037)
文摘By applying non-equilibrium Green's functions (NEGF) in combination with the density functional theory (DFT), we investigate the electronic transport properties of molecular junctions constructed by OPE derivatives with different side groups combined C60 molecules. The results show that the side groups play an important role in the properties of electron transport. Negative differential resistance (NDR) is observed in such devices. Especially for the molecule with electron-donating group ( OCH3), two NDR appear at different bias voltage regions. And the mechanism is proposed for the NDR behavior, owing to the shift of the molecular orbitals caused by the change in molecule charge.
