Relaxation of photodielectric effect in Pb3O4 layers

Experimental data on the kinetics of the photodielectric effect in layers of red lead (Pb3O4) are reported. The photocapacitive properties and dielectric loss under photoexcitation have been studied with the spectral composition of light varied at low frequencies of the measuring field. The dielectric parameters attain steady values long after light is switched on (off). The relationship of the photodielectric phenomena with structural features of the semiconductor and, in particular, with the presence of lone pair electrons of Pb2+ cations is discussed