Determination of Transport and Thermal Properties of Silicon Samples by the Phase-Lag and Sf/Sr Methods

The paper presents results of photoacoustic studies of
thermal and transport properties of silicon samples. It shows for the first time
the influence of plasma waves on the Sf/Sr and phase-lag frequency photoacoustic
characteristics and describes a procedure leading to the determination of both
thermal diffusivity and the life time or the diffusion length of excess carriers
from those characteristics.