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Physical Review Letters, volume 93, issue 18, publication number 187402

Structure of Excited-State Transitions of Individual Semiconductor Nanocrystals Probed by Photoluminescence Excitation Spectroscopy

Publication typeJournal Article
Publication date2004-10-28
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor8.6
ISSN00319007, 10797114
General Physics and Astronomy
Abstract
We perform for the first time photoluminescence excitation (PLE) studies of individual nanocrystals (NCs) that reveal the structure of excited-state transitions not obscured by ensemble averaging. Single-NC PLE spectra strongly deviate from a traditional idealized picture of sharp, quasiatomic resonances. We detect only a few relatively narrow transitions (3-4 meV) at the band edge, while at higher spectral energies, we observe a broad structureless feature separated from the band-edge peaks by a >50 meV "minigap." These observations can be rationalized by analyzing hole intraband relaxation behavior.

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Htoon H., Cox P. J., Klimov V. I. Structure of Excited-State Transitions of Individual Semiconductor Nanocrystals Probed by Photoluminescence Excitation Spectroscopy // Physical Review Letters. 2004. Vol. 93. No. 18. 187402
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Htoon H., Cox P. J., Klimov V. I. Structure of Excited-State Transitions of Individual Semiconductor Nanocrystals Probed by Photoluminescence Excitation Spectroscopy // Physical Review Letters. 2004. Vol. 93. No. 18. 187402
RIS |
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RIS Copy
TY - JOUR
DO - 10.1103/physrevlett.93.187402
UR - https://doi.org/10.1103/physrevlett.93.187402
TI - Structure of Excited-State Transitions of Individual Semiconductor Nanocrystals Probed by Photoluminescence Excitation Spectroscopy
T2 - Physical Review Letters
AU - Htoon, Han
AU - Cox, Paris J.
AU - Klimov, Victor I.
PY - 2004
DA - 2004/10/28 00:00:00
PB - American Physical Society (APS)
IS - 18
VL - 93
SN - 0031-9007
SN - 1079-7114
ER -
BibTex
Cite this
BibTex Copy
@article{2004_Htoon,
author = {Han Htoon and Paris J. Cox and Victor I. Klimov},
title = {Structure of Excited-State Transitions of Individual Semiconductor Nanocrystals Probed by Photoluminescence Excitation Spectroscopy},
journal = {Physical Review Letters},
year = {2004},
volume = {93},
publisher = {American Physical Society (APS)},
month = {oct},
url = {https://doi.org/10.1103/physrevlett.93.187402},
number = {18},
doi = {10.1103/physrevlett.93.187402}
}
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