Abstract
The confined excitons and acoustic phonons of CuCl nanocrystals embedded in NaCl crystals were studied by the persistent spectral-hole-burning (PSHB) spectroscopy. A resonant hole and many low-energy satellite holes as well as longitudinal, transverse optical, and acoustic phonon sidebands were observed in the PSHB spectra. The satellite holes come from the hole burning of the ground-state excitons under the site-selective excitation of the corresponding excited states in the nanocrystals of nearly cubic shapes. The confined acoustic phonons in CuCl nanocrystals were explained as the low-frequency vibrational modes of nearly cubic quantum boxes.
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