Explanation
ceramics materials with semiconductor properties. Abbreviated as semi conductive porcelain. The conductivity is between metal and insulator. Generally, it has relatively large negative resistance temperature characteristics. Trace impurities can change its resistivity, form contact barriers with metals or different conductive semiconductors to show rectification and other properties. The grain, grain boundary and interface phenomena of semiconductive ceramics show a variety of functional characteristics. Its main applications include: ① thermosensitive ceramics ② voltage-sensitive ceremics ③ light-sensitive ceramics ④ humidity sensitive ceramics ⑤ gas sensitive ceramics ⑥ grain boundary layer capacitor ceramics.
Classification
Inorganic non-metallic materials -> Advanced ceramics -> Functional ceramics