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Tuning energetic levels in nanocrystal quantum dots through surface manipulations.
Soreni-Harari, Michal; Yaacobi-Gross, Nir; Steiner, Dov; Aharoni, Assaf; Banin, Uri; Millo, Oded; Tessler, Nir.
  • Soreni-Harari M; The Zisapel Nano-electronics center, Department of Electrical Engineering, Technion--Israel Institute of Technology, Technion City, Haifa 32000, Israel.
Nano Lett ; 8(2): 678-84, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18179278
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.





Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Cristalização / Nanotecnologia / Pontos Quânticos / Nanoestruturas Idioma: Inglês Revista: Nano Lett Ano de publicação: 2008 Tipo de documento: Artigo País de afiliação: Israel