TY - JOUR
T1 - The effect of dielectric friction on the rate of charge separation in type II ZnSe/CdS semiconductor nanorods
AU - Hewa-Kasakarage, Nishshanka N.
AU - El-Khoury, Patrick Z.
AU - Schmall, Nickolas
AU - Kirsanova, Maria
AU - Nemchinov, Alexander
AU - Tarnovsky, Alexander N.
AU - Bezryadin, Alexey
AU - Zamkov, Mikhail
N1 - Funding Information:
We gratefully acknowledge Bowling Green State University for financial support (Grant Nos. SF07, RIC2008, and RCE2008).
PY - 2009
Y1 - 2009
N2 - The effect of dielectric friction on the rate of charge separation in type II ZnSe/CdS semiconductor nanorods has been investigated using picosecond transient absorption spectroscopy. The spatial separation of an excited electron-hole pair was estimated from the redshift in band edge absorption corresponding to the decrease in the exciton binding energy. The present study identifies a considerable effect of the solvent polarity on the rate of charge separation in semiconductor heterostructures, which should be taken into account when selecting nanorod caging media, such as solvents or polymer matrices.
AB - The effect of dielectric friction on the rate of charge separation in type II ZnSe/CdS semiconductor nanorods has been investigated using picosecond transient absorption spectroscopy. The spatial separation of an excited electron-hole pair was estimated from the redshift in band edge absorption corresponding to the decrease in the exciton binding energy. The present study identifies a considerable effect of the solvent polarity on the rate of charge separation in semiconductor heterostructures, which should be taken into account when selecting nanorod caging media, such as solvents or polymer matrices.
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U2 - 10.1063/1.3114464
DO - 10.1063/1.3114464
M3 - Article
AN - SCOPUS:64149122760
SN - 0003-6951
VL - 94
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 13
M1 - 133113
ER -