Intra-excitonic relaxation dynamics in ZnO | Zendy

A. Chernikov | Zendy; Martín Koch | Zendy; Bernhard Laumer | Zendy; Thomas A. Wassner | Zendy; Martin Eickhoff | Zendy; S. W. Koch | Zendy; Sangam Chatterjee | Zendy

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Intra-excitonic relaxation dynamics in ZnO

Author(s) -

A. Chernikov,

Martín Koch,

Bernhard Laumer,

Thomas A. Wassner,

Martin Eickhoff,

S. W. Koch,

Sangam Chatterjee

Publication year - 2011

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3668102

Subject(s) - exciton , photoluminescence , relaxation (psychology) , condensed matter physics , excitation , dynamics (music) , materials science , charge carrier density , rate equation , population , lattice (music) , physics , kinetics , quantum mechanics , doping , optoelectronics , psychology , social psychology , demography , sociology , acoustics

The temperature and carrier-density dependent excitonic relaxation in bulk ZnO is studied by means of time-resolved photoluminescence. A rate-equation model is used to analyze the population dynamics and the transitions between different exciton states. Intra-excitonic (n = 1) to (n = 2) relaxation is clearly identified at low excitation densities and lattice temperatures with a characteristic time constant of 6 ± 0.5 ps.

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