Electrical properties of thin-film composites based on silicon and polypropylene

Results of a study of the current-voltage characteristics of composite resistors (varistors) based on nonpolar propylene and single-crystal silicon are presented. It is shown that the portion of a sharper increase in the current-voltage characteristic is described within the Pool-Frenkel thermal-field effect. It is found that ionized center concentrations Nt increase (1.7–16) × 1022 m−3, carrier free path lengths decrease (4–1.9) × 10−8 m, and potential well heights decrease with increasing filler percentage.