TY - JOUR
T1 - Size-dependent local conductance properties of CdSe nanocrystal ensembles
AU - Toker, D.
AU - Balberg, I.
AU - Zelaya-Angel, O.
AU - Savir, E.
AU - Millo, O.
PY - 2006
Y1 - 2006
N2 - Applying conductance atomic force microscopy to measure the local current routes in ensembles of CdSe nanocrystallites of diameters in the range of 8-12 nm, we found that the electrical transport takes place through the crystallites themselves rather than along their grain boundaries. Statistical analysis of the current images, in correlation with macroscopic electrical transport measurements, reveals a crossover between two different conduction regimes. The behavior in each regime is found to be governed by the average diameter of the nanocrystals in the ensemble. We interpret the above findings as a transport manifestation of the quantum confinement effect.
AB - Applying conductance atomic force microscopy to measure the local current routes in ensembles of CdSe nanocrystallites of diameters in the range of 8-12 nm, we found that the electrical transport takes place through the crystallites themselves rather than along their grain boundaries. Statistical analysis of the current images, in correlation with macroscopic electrical transport measurements, reveals a crossover between two different conduction regimes. The behavior in each regime is found to be governed by the average diameter of the nanocrystals in the ensemble. We interpret the above findings as a transport manifestation of the quantum confinement effect.
UR - http://www.scopus.com/inward/record.url?scp=33244455001&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.73.045317
DO - 10.1103/PhysRevB.73.045317
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AN - SCOPUS:33244455001
SN - 1098-0121
VL - 73
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 4
M1 - 045317
ER -