Abstract
In nm-size CuCl microcrystals embedded in NaCl matrices, resonant luminescence spectra of the Z 3 confined excitons were measured under size-selective excitation among the exciton absorption band, inhomogeneously broadened due to the size-distribution of the microcrystals. The temperature- and size-dependences of the homogeneous line width of the confined exciton absorption with the lowest energy could be derived from the bandwidth of the exciton resonant luminescence. Based on the analysis similar to that for the line width of the free excitons in a bulk crystal, it is found that with decreasing microcrystal size the short-range deformation-type interaction of confined excitons with LA phonon becomes more and more important for the broadening, mainly because of the localization of the vibrational motion, while the Fröhlich-type interaction with LO phonons does not change much on account of its long-range interaction.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
