Physical Review B, volume 58, issue 11, pages 7120-7135

Quantum size level structure of narrow-gap semiconductor nanocrystals: Effect of band coupling

Al. L. EFROS 1
M. ROSEN 1
1
 
Nanostructure Optics Section, Naval Research Laboratory, Washington, DC 20375
Publication typeJournal Article
Publication date1998-09-15
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN24699950, 24699969, 10980121, 1550235X
Abstract
We study the size dependence of electron and hole quantum size levels in spherical semiconductor nanocrystals. An analytical theory of the quantum size levels within a spherical eight-band Pidgeon and Brown model has been developed, which takes into account both the coupling of conduction and valence bands and the complex structure of the valence band in nanocrystals with an infinite potential barrier. We show that in narrow gap semiconductors band mixing must always be taken into account and that it may be important even in wide gap semiconductors, because the mixing is governed by the square root of the ratio of the quantization energy to the energy gap. The strength of the coupling also depends on the ratio of the contributions of remote bands to the effective masses of the electron and the light hole. As a result level structure is very sensitive, in general, to the energy band parameters. The calculated level structure for narrow gap InSb, moderate gap CdTe, and wide gap CdS nanocrystals are presented.

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EFROS A. L., ROSEN M. Quantum size level structure of narrow-gap semiconductor nanocrystals: Effect of band coupling // Physical Review B. 1998. Vol. 58. No. 11. pp. 7120-7135.
GOST all authors (up to 50) Copy
EFROS A. L., ROSEN M. Quantum size level structure of narrow-gap semiconductor nanocrystals: Effect of band coupling // Physical Review B. 1998. Vol. 58. No. 11. pp. 7120-7135.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1103/physrevb.58.7120
UR - https://doi.org/10.1103/physrevb.58.7120
TI - Quantum size level structure of narrow-gap semiconductor nanocrystals: Effect of band coupling
T2 - Physical Review B
AU - EFROS, Al. L.
AU - ROSEN, M.
PY - 1998
DA - 1998/09/15 00:00:00
PB - American Physical Society (APS)
SP - 7120-7135
IS - 11
VL - 58
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
BibTex |
Cite this
BibTex Copy
@article{1998_EFROS,
author = {Al. L. EFROS and M. ROSEN},
title = {Quantum size level structure of narrow-gap semiconductor nanocrystals: Effect of band coupling},
journal = {Physical Review B},
year = {1998},
volume = {58},
publisher = {American Physical Society (APS)},
month = {sep},
url = {https://doi.org/10.1103/physrevb.58.7120},
number = {11},
pages = {7120--7135},
doi = {10.1103/physrevb.58.7120}
}
MLA
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MLA Copy
EFROS, Al. L., and M. ROSEN. “Quantum size level structure of narrow-gap semiconductor nanocrystals: Effect of band coupling.” Physical Review B, vol. 58, no. 11, Sep. 1998, pp. 7120-7135. https://doi.org/10.1103/physrevb.58.7120.
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