Charge transport in mixed CdSe and CdTe colloidal nanocrystal films
Author(s)Bawendi, Moungi G.; Geyer, Scott Mitchell; Porter, Venda J.; Halpert, Jonathan E.; Mentzel, Tamar; Kastner, Marc; ... Show more Show less
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We report the influence of trap states on charge transport through films of mixed CdTe and CdSe nanocrystals (NCs) between lateral electrodes, through layered films of CdTe and CdSe NCs in a layered geometry, and through films of CdTe/CdSe nanobarbells in a layered geometry. We find that an electron trapping state on the surface of the CdTe NCs dominates the conduction in all devices studied. X-ray photoelectron spectroscopy and thermal activation studies implicate unpassivated or oxidized Te as the electron-trapping site.
DepartmentMassachusetts Institute of Technology. Department of Chemistry; Massachusetts Institute of Technology. Department of Physics
Physical Review B
American Physical Society
Geyer, Scott et al. “Charge transport in mixed CdSe and CdTe colloidal nanocrystal films.” Physical Review B 82.15 (2010): 155201. © 2010 The American Physical Society.
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