Physical Review B, volume 50, issue 4, pages 2293-2300

Fluorescence-line narrowing in CdSe quantum dots: Surface localization of the photogenerated exciton

Publication typeJournal Article
Publication date1994-07-15
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN24699950, 24699969, 10980121, 1550235X
Abstract
The electronic properties of shallow band-edge surface traps in nanometer-size CdSe quantum dots are probed using fluorescence-line-narrowing spectroscopy. We find large changes in electron-hole-pair radiative lifetimes and couplings to LO phonons as the temperature is changed from 1.75 to 10 K. We attribute these changes to the localization of the photogenerated hole at the surface of the dots, accompanied by thermally activated motion between these surface localized states. A simple model based on the observed exciton--LO-phonon couplings is constructed to estimate the extent of hole localization in the luminescing state. A size-dependent study (20--80 \AA{} diameter) indicates that surface effects diminish rapidly with increasing size.

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Nirmal M. et al. Fluorescence-line narrowing in CdSe quantum dots: Surface localization of the photogenerated exciton // Physical Review B. 1994. Vol. 50. No. 4. pp. 2293-2300.
GOST all authors (up to 50) Copy
Nirmal M., Murray C. B., Murray C. D., Bawendi M. G., Bawendi M. G. Fluorescence-line narrowing in CdSe quantum dots: Surface localization of the photogenerated exciton // Physical Review B. 1994. Vol. 50. No. 4. pp. 2293-2300.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1103/physrevb.50.2293
UR - https://doi.org/10.1103/physrevb.50.2293
TI - Fluorescence-line narrowing in CdSe quantum dots: Surface localization of the photogenerated exciton
T2 - Physical Review B
AU - Nirmal, M.
AU - Murray, C. B.
AU - Bawendi, M G
AU - Murray, Carl D.
AU - Bawendi, Moungi G.
PY - 1994
DA - 1994/07/15 00:00:00
PB - American Physical Society (APS)
SP - 2293-2300
IS - 4
VL - 50
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
BibTex |
Cite this
BibTex Copy
@article{1994_Nirmal,
author = {M. Nirmal and C. B. Murray and M G Bawendi and Carl D. Murray and Moungi G. Bawendi},
title = {Fluorescence-line narrowing in CdSe quantum dots: Surface localization of the photogenerated exciton},
journal = {Physical Review B},
year = {1994},
volume = {50},
publisher = {American Physical Society (APS)},
month = {jul},
url = {https://doi.org/10.1103/physrevb.50.2293},
number = {4},
pages = {2293--2300},
doi = {10.1103/physrevb.50.2293}
}
MLA
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MLA Copy
Nirmal, M., et al. “Fluorescence-line narrowing in CdSe quantum dots: Surface localization of the photogenerated exciton.” Physical Review B, vol. 50, no. 4, Jul. 1994, pp. 2293-2300. https://doi.org/10.1103/physrevb.50.2293.
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