Strong configuration mixing due to dielectric confinement in semiconductor nanorods

被引:26
作者
Climente, J. I. [1 ]
Royo, M. [1 ]
Movilla, J. L. [1 ]
Planelles, J. [1 ]
机构
[1] Univ Jaume 1, Dept Quim Fis & Analit, E-12080 Castellon de La Plana, Spain
关键词
cadmium compounds; excited states; excitons; ground states; II-VI semiconductors; mixing; nanostructured materials; wave functions; CDSE QUANTUM RODS; PSEUDOPOTENTIAL CALCULATION; DEPENDENT PROPERTIES; ELECTRONIC STATES; SIZE DEPENDENCE; NANOCRYSTALS; EXCITONS; SHAPE; DOTS; SILICON;
D O I
10.1103/PhysRevB.79.161301
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The interaction between electron-electron and electron-hole pairs in semiconductor nanorods embedded in dielectric media is investigated using a configuration-interaction method. Contrary to spherical quantum dots of similar volume, the dielectric confinement is shown to bring nanorods into a regime of strong configuration mixing. The wave functions are particularly sensitive to such mixing, which leads to qualitative changes in the electronic and optical properties of the rods.
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页数:4
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共 28 条
[1]   Computing induced charges in inhomogeneous dielectric media: Application in a Monte Carlo simulation of complex ionic systems [J].
Boda, D ;
Gillespie, D ;
Nonner, W ;
Henderson, D ;
Eisenberg, B .
PHYSICAL REVIEW E, 2004, 69 (04) :10
[2]   Shape and dielectric mismatch effects in semiconductor quantum dots [J].
Bolcatto, PG ;
Proetto, CR .
PHYSICAL REVIEW B, 1999, 59 (19) :12487-12498
[4]   Size dependence of the electron-hole recombination rates in semiconductor quantum dots -: art. no. 045313 [J].
Corni, S ;
Braskén, M ;
Lindberg, M ;
Olsen, J ;
Sundholm, D .
PHYSICAL REVIEW B, 2003, 67 (04)
[5]   Small is different: Shape-, size-, and composition-dependent properties of some colloidal semiconductor nanocrystals [J].
El-Sayed, MA .
ACCOUNTS OF CHEMICAL RESEARCH, 2004, 37 (05) :326-333
[6]  
Fonoberov VA, 2002, PHYS REV B, V66, DOI 10.1103/PhysRevB.66.085310
[7]   Direct pseudopotential calculation of exciton Coulomb and exchange energies in semiconductor quantum dots [J].
Franceschetti, A ;
Zunger, A .
PHYSICAL REVIEW LETTERS, 1997, 78 (05) :915-918
[8]   Strong exciton binding in quantum structures through remote dielectric confinement [J].
Goldoni, G ;
Rossi, F ;
Molinari, E .
PHYSICAL REVIEW LETTERS, 1998, 80 (22) :4995-4998
[9]   SIZE DEPENDENCE OF EXCITONS IN SILICON NANOCRYSTALS [J].
HILL, NA ;
WHALEY, KB .
PHYSICAL REVIEW LETTERS, 1995, 75 (06) :1130-1133
[10]   Effect of zero- to one-dimensional transformation on multiparticle Auger recombination in semiconductor quantum rods [J].
Htoon, H ;
Hollingsworth, JA ;
Dickerson, R ;
Klimov, VI .
PHYSICAL REVIEW LETTERS, 2003, 91 (22)