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Open Access item Band-gap renormalization in InP/GaxIn1-xP quantum dots
|Authors:||Nowak, A. K.|
Meulen, H. P. van der
Calleja, J. M.
Ripalda, José María
|Publisher:||American Physical Society|
|Citation:||Physical Review B 83: 245447 (2011)|
|Abstract:||A continuous and systematic red shift of the exciton emission energy in small InP/InGaP quantum dots is observed for increasing excitation energies and intensities. Superposed on this red shift, emission energy minima appear which show a one-to-one correspondence to emission intensity maxima as a function of the excitation energy. This band-gap renormalization is attributed to the hybridization of the quantum dot excited states with the wetting layer continuum. Polarization-resolved measurements reveal that the exciton fine structure splitting can be tuned up to 10% in the present case by changing the excitation energy. Possible implications of the present results on the development of entangled photon pair sources are discussed.|
|Description:||5 figuras, 5 páginas.-- PACS number(s): 78.67.Hc, 78.55.Cr|
|Publisher version (URL):||http://dx.doi.org/10.1103/PhysRevB.83.245447|
|Appears in Collections:||(IMM-CNM) Artículos|
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