Far-Infrared Absorption of PbSe Nanorods

Type
Article
Authors
Hyun, Byung-Ryool
Bartnik, A. C.
Koh, Weon-kyu
Agladze, N. I.
Wrubel, J. P.
Sievers, A. J.
Murray, Christopher B.
Wise, Frank W.
KAUST Grant Number
KUS-C1-018-02
Date
2011-07-13

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Abstract
Measurements of the far-infrared absorption spectra of PbSe nanocrystals and nanorods are presented. As the aspect ratio of the nanorods increases, the Fröhlich sphere resonance splits into two peaks. We analyze this splitting with a classical electrostatic model, which is based on the dielectric function of bulk PbSe but without any free-carrier contribution. Good agreement between the measured and calculated spectra indicates that resonances in the local field factors underlie the measured spectra. © 2011 American Chemical Society.
Citation
Hyun B-R, Bartnik AC, Koh W, Agladze NI, Wrubel JP, et al. (2011) Far-Infrared Absorption of PbSe Nanorods. Nano Lett 11: 2786–2790. Available: http://dx.doi.org/10.1021/nl201115h.
Sponsors
This work was supported by the Cornell Center for Materials Research (CCMR) with funding from the Materials Research Science and Engineering Center program of the National Science Foundation (cooperative agreement DMR 0520404) and in part by Award No. KUS-C1-018-02 made by King Abdullah University of Science and Technology (KAUST). C.B.M. and W.-k.K. acknowledge financial support from the NSF through DMS-0935165. This research was partially supported by the Nano/Bio Interface Center through the National Science Foundation (NSEC DMR08-32802). Authors N.I.A., J.P.W., and A.J.S. were supported by DMR-0906491 and DOE No. DE-FG02-04ER46154.
Publisher
American Chemical Society (ACS)
Journal
Nano Letters
ISSN
1530-6984
1530-6992
DOI
10.1021/nl201115h
PubMed ID
21627094
Handle URI
http://hdl.handle.net/10754/598312
Collections
Publications Acknowledging KAUST Support