Bright Electroluminescence from Single Graphene Nanoribbon Junctions
نویسندگان
چکیده
منابع مشابه
Transport properties of armchair graphene nanoribbon junctions between graphene electrodes.
The transmission properties of armchair graphene nanoribbon junctions between graphene electrodes are investigated by means of first-principles quantum transport calculations. First the dependence of the transmission function on the size of the nanoribbon has been studied. Two regimes are highlighted: for a small applied bias transport takes place via tunneling and the length of the ribbon is t...
متن کاملConductance of Graphene Nanoribbon Junctions and the Tight Binding Model
Planar carbon-based electronic devices, including metal/semiconductor junctions, transistors and interconnects, can now be formed from patterned sheets of graphene. Most simulations of charge transport within graphene-based electronic devices assume an energy band structure based on a nearest-neighbour tight binding analysis. In this paper, the energy band structure and conductance of graphene ...
متن کاملElectroluminescence spectra in weakly coupled single-molecule junctions
We have combined ab initio quantum chemistry calculations with a rate-equation formalism to analyze electroluminescence spectra in single-molecule junctions, measured recently by several groups in scanning tunneling microscope setups. In our method, the entire vibrational spectrum is taken into account. Our method leads to good quantitative agreement with both the spectroscopic features of the ...
متن کاملElectronic properties of nanoribbon junctions
We investigate the effects of nitrogen impurities on the electronic properties of quantum dots realized in Z-shaped graphene nanoribbon junction. The system is studied using first principle calculations, based on the local spin density approximation (LSDA). Our results indicate that the presence of the impurities drastically changes the configuration of the localized states in the quantum dot. ...
متن کاملVoltage-dependent conductance of a single graphene nanoribbon.
Graphene nanoribbons could potentially be used to create molecular wires with tailored conductance properties. However, understanding charge transport through a single molecule requires length-dependent conductance measurements and a systematic variation of the electrode potentials relative to the electronic states of the molecule. Here, we show that the conductance properties of a single molec...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nano Letters
سال: 2017
ISSN: 1530-6984,1530-6992
DOI: 10.1021/acs.nanolett.7b03797