Effects of finite spin-orbit splitting on optical properties of spherical semiconductor quantum dots

1996 ◽  
Vol 53 (11) ◽  
pp. 7287-7298 ◽  
Author(s):  
Tristan Richard ◽  
Pierre Lefebvre ◽  
Henry Mathieu ◽  
Jacques Allègre
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Semiconductor Quantum Dots ◽  
Spin Orbit ◽  
Orbit Splitting ◽  
Spin Orbit Splitting

Quantum Confined Electron-Hole States in ZnSe Quantum Dots

1999 ◽  
Vol 571 ◽  
Author(s):  
H. W. H. Lee ◽  
C. A. Smith ◽  
V. J. Leppert ◽  
S. H. Risbud
Keyword(s):  
Quantum Dots ◽  
Size Dependence ◽  
Energy Gap ◽  
Stokes Shift ◽  
Spin Orbit ◽  
Electron Hole ◽  
Orbit Splitting ◽  
Spin Orbit Splitting ◽  
Trap Emission ◽  
Quantum Confined

ABSTRACTWe observed the quantum confined bandedge emission from ZnSe quantum dots and the size dependence of the energy states, spin-orbit interaction, and Stokes shift. The bandedge emission occurs in the UV-blue. The energy gap = Eg + C/dn where d is the diameter and n is 1. 19 ± 0.13 and 1.21 ± 0.13 for the first and second electron-hole transitions, respectively. The separation between these transitions approaches the bulk spin-orbit splitting, while the Stokes shift decreases with particle size. Effective mass theories can not explain these results. Trap emission is observed in some samples in the green and red, resulting from Se-related traps.

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