2006
DOI: 10.1590/s0103-97332006000300055
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Optical properties of ellipsoidal CdSe quantum dots

Abstract: The energy spectrum and optical absorption of confined carriers in ellipsoidal CdSe quantum dots are calculated. Our model relies on the effective mass approximation and Fermi's golden rule for the electronic structure and optical properties, respectively. We demonstrate that the electronic structure and the interband optical absorption are highly dependent on the ellipsoid aspect ratio.

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Cited by 9 publications
(7 citation statements)
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“…Besides, the time constants of the electron escape process in the conduction and the valence bands are obtained as where is the energy spacing between ES c(v) and GS c(v) 47 – 49 . In addition, and are the electron degeneracy of the ground and excited states in the conduction and the valance band, respectively which is determined by , , , and 50 . The total number of the electrons of each state, GS c , ES c , GS v , and ES v are demonstrated with , , where V d is the volume of the active region and N QD,i is the corresponding QD density for channel-1 and 2, respectively.…”
Section: The Theoretical Modeling Of Two-channel Aommentioning
confidence: 99%
“…Besides, the time constants of the electron escape process in the conduction and the valence bands are obtained as where is the energy spacing between ES c(v) and GS c(v) 47 – 49 . In addition, and are the electron degeneracy of the ground and excited states in the conduction and the valance band, respectively which is determined by , , , and 50 . The total number of the electrons of each state, GS c , ES c , GS v , and ES v are demonstrated with , , where V d is the volume of the active region and N QD,i is the corresponding QD density for channel-1 and 2, respectively.…”
Section: The Theoretical Modeling Of Two-channel Aommentioning
confidence: 99%
“…The first study [3] of the optical properties of a spherical quantum dot with infinitely high walls was a theoretical investigation of the direct absorption of light. The optical properties of nanoparticles having cylindrical, ellipsoidal, semiellipsoidal, pyramidal and lens shape were analysed in subsequent works [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The analysis of both the optical transition-matrix elements and the oscillator strengths in the dipole approximation revealed interesting features induced by the size and shape of a nanoparticle.…”
Section: Introductionmentioning
confidence: 99%
“…Optical properties of spheroidal QDs have been studied in 11,12,13,14 . Recently the liquid phase epitaxy technique is used to create ellipsoidal QDs 15,16 .…”
Section: Introductionmentioning
confidence: 99%