Using the open photoacoustic cell technique, a set of physical properties f
or a semiconductor (n-RuSe2) in powder form was measured. According to the
Dramicanin theoretical model, charge carriers transport parameters (bulk an
d surface) and the effective thermal diffusivity were obtained. (C) 2000 Am
erican Institute of Physics. [S0021- 8979(00)08317-1].