1304.1623 (A. A. Prokofiev et al.)

Phonon decay in silicon nanocrystals    [PDF]

A. A. Prokofiev, A. N. Poddubny, I. N. Yassievich

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$_2$ nanocrystals. Relevance of the phonon decay to the experimentally observed hot carrier photoluminescence is discussed.

View original: http://arxiv.org/abs/1304.1623