Peer-Reviewed Journal Details
Mandatory Fields
Rice, JH,Robinson, JW,Na, JH,Lee, KH,Taylor, RA,Williams, DP,O'Reilly, EP,Andreev, AD,Arakawa, Y,Yasin, S;
2005
May
Nanotechnology
Biexciton and exciton dynamics in single InGaN quantum dots
Validated
()
Optional Fields
COMPLEXES
16
1477
1481
Time-resolved and time-integrated microphotoluminescence spectrometry of exciton and biexciton transitions in a single self-assembled InGaN quantum dot gives sharp peaks, with the biexciton 41 meV higher in energy. Theoretical modelling in the Hartree approximation (using a self-consistent finite difference method) predicts a splitting of up to 51 meV. Time-resolved microphotoluminescence measurements yield a radiative recombination lifetime of 1.0 +/- 0.1 ns for the exciton and 1.4 +/- 0.1 ns for the biexciton. The data can be fitted to a coupled DE rate equation model, confirming that the exciton state is refilled as biexcitons undergo radiative decay.
DOI 10.1088/0957-4484/16/9/010
Grant Details