State-Resolved Exciton−Phonon Couplings in CdSe Semiconductor Quantum Dots
| Autor: | Samuel L. Sewall, Patanjali Kambhampati, Ryan R. Cooney, D. M. Sagar |
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| Rok vydání: | 2008 |
| Předmět: |
Condensed Matter::Quantum Gases
Coupling Physics Condensed matter physics Phonon Exciton Acoustic Phonons Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Surfaces Coatings and Films Electronic Optical and Magnetic Materials Condensed Matter::Materials Science General Energy Semiconductor quantum dots Quantum dot laser Quantum dot Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons Colloidal quantum dots Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Physical Chemistry C. 112:9124-9127 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | The first observation of state-resolved exciton−phonon couplings are reported for the lowest four eigenstates in strongly confined colloidal quantum dots for both optical and acoustic phonons. State-resolved pump/probe experiments show that the excitonic eigenstate has a strong influence upon the Frohlich coupling to optical phonons and a moderate influence on the deformation potential coupling to acoustic phonons. These experiments provide a general approach to measuring exciton−phonon couplings in quantum dots with eigenstate-specificity. |
| Databáze: | OpenAIRE |
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