14193

12854

كارشناسي ارشد

ماده چگال

اصفهان : دانشگاه صنعتي اصفهان

1397

۱۱، [۱۶۰]ص.: مصور، جدول، نمودار

پيمان صاحب سرا

فرهاد فضيله

ممتحن داخلي: جواد هاشمي فر، مهدي عبدي

1397/10/04

كتابنامه

فيزيك

فيزيك

ID12854

AbstractIn this thesis Coulomb blockade effect is studied for a system composed of organicmolecules and quantum dots We use the tight binding h Hamiltonian to obtainGreen function which is derived from second quantization and Heisenberg equationsof motion for creation and annihilation operators by including electron electroninteraction The electrodes self energy is taken into account by using expansionof the Green function in term of the Hamiltonian wave function Transmissionfunction and density of states at two different device situations neutral andcharged structure are calculated we depict the potential across device by Jacobimethod and the current by Landuer formula Moreover we calculate switchingbias Inserting quantum dots between organic molecules increases conductionat Fermi energy level Eventually we describe the break down of the Coulombblockade due to the replacement energy levels and the hopping term between thenearest neighbours we indicate this work increases conduction at Fermi energy level Keywords Coulomb blockade Quantum dot Green function ۵

پيمان صاحب سرا

فرهاد فضيله

ممتحن داخلي: جواد هاشمي فر، مهدي عبدي