Chapter IV conduction phenomena in solid dielectrics

Readers of this chapter will notice that the sections on inorganic conduction and photoconduction are predominantly concerned with cadmium sulfide and silver halides. This is due not to any preference on the part of the authors, but to the importance that these substances are now assuming as ideal materials in which to investigate the properties of free carriers in insulators. Cadmium sulfide also has the advantage of being commercially important, and does not suffer from the disadvantage of the silver halides; namely a high ionic conductivity at room temperature.