Ambipolar transition voltage spectroscopy

• Verfasst von: Bâldea, Ioan [VerfasserIn]
• Titel: Ambipolar transition voltage spectroscopy
• Titelzusatz: analytical results and experimental agreement
• Verf.angabe: Ioan Bâldea
• E-Jahr: 2012
• Jahr: 25 January 2012
• Umfang: 5 S.
• Fussnoten: Gesehen am 03.08.2018
• Titel Quelle: Enthalten in: Physical review / B
• Ort Quelle: College Park, Md. : APS, 1970
• Jahr Quelle: 2012
• Band/Heft Quelle: 85(2012), 3, Artikel-ID 0354421, Seite 1-5
• ISSN Quelle: 1550-235X
• DOI: doi:10.1103/PhysRevB.85.035442
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1578231515

Abstract

This work emphasizes that the transition voltages Vt± for both bias polarities (V ≷ 0) should be used to properly determine the energy offset ɛ0 of the molecular orbital closest to electrodes’ Fermi level and the bias asymmetry γ in molecular junctions. Accurate analytical formulas are deduced to estimate ɛ0 and γ solely in terms of Vt±. These estimates are validated against experiments, by showing that full experimental I-V curves measured by Beebe et al. [Phys. Rev. Lett. 97, 026801 (2006)] and Tan et al. [Appl. Phsy. Lett. 96, 013110 (2010)] for both bias polarities can be excellently reproduced.