Excitons in InP quantum dots

被引：44

作者：

Fu, HX ^{[1
]}

Zunger, A ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.57.R15064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The excitonic spectrum of InP quantum dots is investigated using an atomistic pseudopotential approach for the single-particle problem and a state-dependent screened Coulomb interaction for the many-body problem. Our calculations show a different energy distribution of single-particle states relative to the commonly used k.p theory as well as significant parity mixing in the envelope functions, forbidden in 6x6 k.p. The calculated excitonic spectrum, including seven excitons, explains well the recent experimental measurements.

引用

页码：15064 / 15067

页数：4

共 16 条

[1] BANIN U, UNPUB
[2] Excited-state spectroscopy of InP quantum dots
Bertram, D
Micic, OI
Nozik, AJ
[J]. PHYSICAL REVIEW B, 1998, 57 (08): : R4265 - R4268
[3] ELECTRON ELECTRON AND ELECTRON-HOLE INTERACTIONS IN SMALL SEMICONDUCTOR CRYSTALLITES - THE SIZE DEPENDENCE OF THE LOWEST EXCITED ELECTRONIC STATE
BRUS, LE
[J]. JOURNAL OF CHEMICAL PHYSICS, 1984, 80 (09) : 4403 - 4409
[4] Direct pseudopotential calculation of exciton Coulomb and exchange energies in semiconductor quantum dots
Franceschetti, A
Zunger, A
[J]. PHYSICAL REVIEW LETTERS, 1997, 78 (05) : 915 - 918
[5] Local-density-derived semiempirical nonlocal pseudopotentials for InP with applications to large quantum dots
Fu, HX
Zunger, A
[J]. PHYSICAL REVIEW B, 1997, 55 (03) : 1642 - 1653
[6] InP quantum dots: Electronic structure, surface effects, and the redshifted emission
Fu, HX
Zunger, A
[J]. PHYSICAL REVIEW B, 1997, 56 (03): : 1496 - 1508
[7] Applicability of the k•p method to the electronic structure of quantum dots
Fu, HX
Wang, LW
Zunger, A
[J]. PHYSICAL REVIEW B, 1998, 57 (16): : 9971 - 9987
[8] GRUNDMANN M, 1995, PHYS REV LETT, V74, P3043
[9] Haken H, 1956, NUOVO CIMENTO, V10, P1230
[10] Micic OI, 1996, APPL PHYS LETT, V68, P3150, DOI 10.1063/1.115807

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