Size-dependent single-particle energy levels and interparticle Coulomb interactions in CdSe quantum dots measured by scanning tunneling spectroscopy

被引：69

作者：

Jdira, L

Liljeroth, P

Stoffels, E

Vanmaekelbergh, D

Speller, S

机构：

[1] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6500 GL Nijmegen, Netherlands

[2] Univ Utrecht, Debye Inst, NL-3508 TA Utrecht, Netherlands

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.73.115305

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on tunneling spectroscopy measurements on colloidal CdSe quantum dots of different sizes. The size-dependent energy level structure and electron-hole Coulomb attraction in CdSe quantum dots are obtained by a combination of shell-tunneling spectroscopy and optical spectroscopy. The results are in good agreement with tight-binding calculations. The electron-electron interactions are investigated by shell-filling spectroscopy. The tunneling spectra in this regime are analyzed by solving the master equation for the electron and hole occupancy of the quantum dot.

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页数：6

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