Two-particle calculation of excitonic effects in semiconductor nanocrystals

被引:22
作者
Hill, NA [1 ]
Whaley, KB [1 ]
机构
[1] UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720
关键词
D O I
10.1016/0301-0104(96)00183-8
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We present a novel method for calculating the excitonic properties of nanometer-sized semiconductor structures. The method uses a time-dependent checkerboard propagation technique within the tight-binding approximation, and includes the electron-hole Coulomb interaction in the zeroth order Hamiltonian. We illustrate the method with two-particle calculations of exciton energies in CdSe and Si nanocrystals. The results of the two-particle calculations are compared with calculations which treat the Coulomb interaction perturbatively, and with measured absorption energies.
引用
收藏
页码:117 / 133
页数:17
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