Deformation potentials of CdSe quantum dots

被引:24
作者
Li, JB [1 ]
Wang, LW [1 ]
机构
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA
关键词
D O I
10.1063/1.1800288
中图分类号
O59 [应用物理学];
学科分类号
摘要
The size-dependent deformation potentials of CdSe quantum dots are studied by first-principle and semiempirical pseudopotential calculations. We find that the amplitude of the quantum dot deformation potential is only slightly larger than the bulk value, and this increase is mostly caused by the off-Gamma point deformation potentials in the bulk, which are larger in amplitude than the Gamma point deformation potential. (C) 2004 American Institute of Physics.
引用
收藏
页码:2929 / 2931
页数:3
相关论文
共 23 条
[1]   RESONANCE RAMAN-SCATTERING AND OPTICAL-ABSORPTION STUDIES OF CDSE MICROCLUSTERS AT HIGH-PRESSURE [J].
ALIVISATOS, AP ;
HARRIS, TD ;
BRUS, LE ;
JAYARAMAN, A .
JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (10) :5979-5982
[2]   DEFORMATION POTENTIALS OF K = 0 STATES OF TETRAHEDRAL SEMICONDUCTORS [J].
BLACHA, A ;
PRESTING, H ;
CARDONA, M .
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 1984, 126 (01) :11-36
[3]   Quantum-size effects on the pressure-induced direct-to-indirect band-gap transition in InP quantum dots [J].
Fu, HX ;
Zunger, A .
PHYSICAL REVIEW LETTERS, 1998, 80 (24) :5397-5400
[4]   Activation volumes for solid-solid transformations in nanocrystals [J].
Jacobs, K ;
Zaziski, D ;
Scher, EC ;
Herhold, AB ;
Alivisatos, AP .
SCIENCE, 2001, 293 (5536) :1803-1806
[5]   Interdot interactions and band gap changes in CdSe nanocrystal arrays at elevated pressure [J].
Kim, BS ;
Islam, MA ;
Brus, LE ;
Herman, IP .
JOURNAL OF APPLIED PHYSICS, 2001, 89 (12) :8127-8140
[6]   Observation of pressure-induced direct-to-indirect band gap transition in InP nanocrystals [J].
Lee, CJ ;
Mizel, A ;
Banin, U ;
Cohen, ML ;
Alivisatos, AP .
JOURNAL OF CHEMICAL PHYSICS, 2000, 113 (05) :2016-2020
[7]  
LI J, 2003, NANO LETT, V4, P29
[8]   First principle study of core/shell structure quantum dots [J].
Li, JB ;
Wang, LW .
APPLIED PHYSICS LETTERS, 2004, 84 (18) :3648-3650
[9]   Shape effects on electronic states of nanocrystals [J].
Li, JB ;
Wang, LW .
NANO LETTERS, 2003, 3 (10) :1357-1363
[10]   High energy excitations in CdSe quantum rods [J].
Li, JB ;
Wang, LW .
NANO LETTERS, 2003, 3 (01) :101-105