Emission spectra from Coulomb-coupled quantum dot in the n – n junction

• Published in: Physics letters. A Vol. 374; no. 22; pp. 2262 - 2266
• Main Authors: Yan, W.X., Li, Wen-fan, Xu, L.P., Gong, J.P., Wen, T.D.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 03-05-2010
• Subjects: Emission spectra; N-n junctions; Occupation; Quantum dot; Quantum dots; Quantum transport; Solid state physics; Spectral emissivity; Spontaneous emission; Quantum dot; Quantum transport; Spontaneous emission
• ISSN: 0375-9601; 1873-2429
• DOI: 10.1016/j.physleta.2010.03.031

The exact expression for the spontaneous emission spectra from the Coulomb-coupled quantum dots embedded in
n
–
n
junction quantum dot has been obtained. All resonance mechanisms involving in the system have been classified into two classes, intra-resonance and inter-resonance mechanisms. It is found that the resonance mechanisms dominating the emission spectra experiences transitions from intra-resonance, coexistence of the inter- and intra-resonance, to inter-resonance with the increasing of the electron occupation number in the second quantum dot.