Exciton formation and relaxation dynamics in quantum wires
Physical review letters, 1998•APS
The dynamics of one-dimensional (1D) excitons is investigated in a GaAs/AlAs quantum
wire array (QWR-A) using picosecond time resolved photoluminescence (PL)
measurements. The excitation density is 4× 10 4 cm− 1, a factor of 20 below the Mott density.
The rise and decay time constants of the excitonic PL in the QWR-A are 55 and 450 psec,
respectively. The exciton formation time in 1D is determined to be≈ 30 psec. Our results
suggest that exciton-acoustic-phonon scattering is enhanced in 1D. However, the rates of …
wire array (QWR-A) using picosecond time resolved photoluminescence (PL)
measurements. The excitation density is 4× 10 4 cm− 1, a factor of 20 below the Mott density.
The rise and decay time constants of the excitonic PL in the QWR-A are 55 and 450 psec,
respectively. The exciton formation time in 1D is determined to be≈ 30 psec. Our results
suggest that exciton-acoustic-phonon scattering is enhanced in 1D. However, the rates of …
Abstract
The dynamics of one-dimensional (1D) excitons is investigated in a GaAs/AlAs quantum wire array (QWR-A) using picosecond time resolved photoluminescence (PL) measurements. The excitation density is 4× 10 4 cm− 1, a factor of 20 below the Mott density. The rise and decay time constants of the excitonic PL in the QWR-A are 55 and 450 psec, respectively. The exciton formation time in 1D is determined to be≈ 30 psec. Our results suggest that exciton-acoustic-phonon scattering is enhanced in 1D. However, the rates of exciton scattering with carriers and excitons is reduced.
American Physical Society以上显示的是最相近的搜索结果。 查看全部搜索结果