Biexciton kinetics in GaN quantum wells: Time-resolved and time-integrated photoluminescence measurements

We report on the experimental achievement of narrow ultraviolet excitonic and biexcitonic emission from GaN/AlGaN quantum wells. The very large biexciton binding energy (up to 12 meV) inhibits thermalization between the two species allowing to study the recombination kinetics of the biexciton gas. By performing resonant and nonresonant time resolved measurements, we elucidate the interplay between biexciton formation and exciton acoustic-phonon mediated relaxation within localized states.


Published in:
Physical Review B, 77, 12, 5342
Year:
2008
ISSN:
1098-0121
Keywords:
Laboratories:




 Record created 2010-10-05, last modified 2018-03-17


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