Band-gap renormalization in InP/GaxIn1-xP quantum dots
Entity
UAM. Departamento de Física de MaterialesPublisher
The American Physical SocietyDate
2011-06-28Citation
10.1103/PhysRevB.83.245447
Physycal Review B 83.24 (2011): 245447
ISSN
1098-0121 (print); 1550-235X (online)DOI
10.1103/PhysRevB.83.245447Funded by
This work has been supported by research contracts of the Spanish Ministry of Education Grants MAT2008- 01555/NAN, TEC2008-06756-C03-01, and Consolider CSD 2006-19, and the Community of Madrid CAM (P2009/ESP- 1503)Project
Comunidad de Madrid. S2009/MAT-1503/Q&CLIGHTEditor's Version
http://dx.doi.org/10.1103/PhysRevB.83.245447Subjects
FísicaRights
© 2011 American Physical SocietyAbstract
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
Files in this item
Google Scholar:Nowak, Anna Kamila
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Gallardo, E.
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Van Der Meulen, Herko Piet
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Calleja, J. M.
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Ripalda, J. M.
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González, L.
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González, Y.
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