Nano Archive

Tuning energetic levels in nanocrystal quantum dots through surface manipulations

Soreni-Hararl, Michal and Yaacobi-Gross, Nir and Steiner, Dov and Aharoni, Assaf and Banin, Uri and Millo, Oded and Tessler, Nir (2008) Tuning energetic levels in nanocrystal quantum dots through surface manipulations. NANO LETTERS, 8 (2). pp. 678-684.

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Official URL: http://pubs.acs.org/doi/full/10.1021/nl0732171

Abstract

We demonstrate tuning of the electronic level positions with respect to the vacuum level in colloidal InAs nanocrystals using surface ligand exchange. Electrochemical as well as scanning tunneling spectroscopy measurements reveal that the tuning is largely dependent on the nanocrystal size and the surface linking group, while the polarity of the ligand molecules has a lesser effect. The implications of affecting the electronic system of nanocrystal through its capping are illustrated through prototype devices.

Item Type:Article
Uncontrolled Keywords:CDSE NANOCRYSTALS; SOLAR-CELLS; OPTICAL SPECTROSCOPY; CHARGE-TRANSFER; DEVICES; ELECTROLUMINESCENCE; SEMICONDUCTOR; PHOTODETECTORS; COMPOSITES; MONOLAYERS
Subjects:Analytical Science > Microscopy and probe methods
Material Science > Functional and hybrid materials
ID Code:5908
Deposited By:IoN
Deposited On:16 Sep 2009 11:00
Last Modified:16 Sep 2009 11:00

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