Title :
On the non-locality of the electron-photon self-energy: Application to carbon nanotube photo-detectors
Author :
Pourfath, M. ; Baumgartner, O. ; Kosina, H.
Author_Institution :
Inst. for Microelectron., TU Wien, Vienna
Abstract :
Carbon nanotubes have been considered in recent years for future opto-electronic applications because of their direct band-gap and the tunability of the band-gap with the tube diameter. The numerical challenges for the analysis of carbon nanotube based photo-detectors are studied. The results indicate the non-locality of electron-photon interaction. For accurate analysis it is essential to include many off-diagonals of the electron-photon self-energy.
Keywords :
Green´s function methods; carbon nanotubes; elemental semiconductors; field effect transistors; infrared detectors; nanotube devices; photodetectors; semiconductor device models; semiconductor nanotubes; tight-binding calculations; C; CNT FET; IR photodetector; NEGF method; carbon nanotube photodetector; electron-photon interaction; electron-photon self-energy nonlocality; nonequilibrium Green´s function formalism; quantum transport; tight-binding pi-bond model; Atomic layer deposition; Carbon nanotubes; Charge carrier processes; Electron tubes; Green´s function methods; Infrared detectors; Microelectronics; Numerical analysis; Photonic band gap; Solid state circuits;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices, 2008. NUSOD '08. International Conference on
Conference_Location :
Nottingham
Print_ISBN :
978-1-4244-2307-1
DOI :
10.1109/NUSOD.2008.4668261
