OBSERVATION OF EXCITED BIEXCITON STATES IN CUCL QUANTUM DOTS - CONTROL OF THE QUANTUM-DOT ENERGY BY A PHOTON

Citation
M. Ikezawa et Y. Masumoto, OBSERVATION OF EXCITED BIEXCITON STATES IN CUCL QUANTUM DOTS - CONTROL OF THE QUANTUM-DOT ENERGY BY A PHOTON, JPN J A P 1, 36(6B), 1997, pp. 4191-4193
Citations number
12
Volume
36
Issue
6B
Year of publication
1997
Pages
4191 - 4193
Database
ISI
SICI code
Abstract
Experimental observations of the excited biexciton states in CuCl quan tum dots embedded in a NaCl crystal are presented. An increased absorp tion due to the transition from the exciton state to the excited biexc iton states was clearly observed on the high-energy side of the excito n resonance in subpicosecond pump-and-probe spectra at 77 K. The energ y difference between it and the exciton resonance largely increased wi th decreasing dot size. Temporal evolution of the induced absorption b and was studied and the results were consistent with the identificatio n of the excited biexciton states.