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KALLIAKOS , S.

Last name: KALLIAKOS

First name: S.

March 15, 2004 (v1)

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Nontrivial carrier recombination dynamics and optical properties of over-excited GaN/AlN quantum dots

Kalliakos, S. Bretagnon, Thierry Lefebvre, Pierre

We analyze the low temperature photoluminescence properties of two multi-layer stacking of GaN/AlN quantum dots. We report drastic differences of linewidths between continuous wave and time-resolved photoluminescence experiments. After the pulsed excitation, time-resolved photoluminescence reveals a substantial red shift of the line, which...

Uploaded on: December 3, 2022
May 25, 2003 (v1)

Publication

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Optical properties of GaN/AlN quantum boxes under high photo-excitation

Kalliakos, S. Bretagnon, Thierry Lefebvre, Pierre

Piezoelectric effects on the optical properties of GaN/AlN quantum dots have been investigated by both continuous-wave and time-resolved photoluminescence (TRPL) measurements. The increase in excitation density in CW-PL leads to a blue shift of the transition energy. The TRPL measurements reveal a very large blue-shift (0.6 eV) of the PL peak...

Uploaded on: December 3, 2022