Phonon decay in silicon nanocrystals
arXiv:1304.1623
Abstract
The decay of the optical phonon into the two phonons of smaller energy is calculated for Si nanocrystals. The rate of the process is in the range of 1 to 10 ps. Such anharmonic phonon decay may control the energy relaxation rate of excited carriers in Si/SiO nanocrystals. Relevance of the phonon decay to the experimentally observed hot carrier photoluminescence is discussed.
4 pages, 4 figures