Far-Infrared Absorption of PbSe Nanorods

Byung-Ryool Hyun, A. C. Bartnik, Weon-kyu Koh, N. I. Agladze, J. P. Wrubel, A. J. Sievers, Christopher B. Murray, Frank W. Wise

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


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.
Original languageEnglish (US)
Pages (from-to)2786-2790
Number of pages5
JournalNano Letters
Issue number7
StatePublished - Jul 13 2011
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1-018-02
Acknowledgements: 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.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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