ELECTRET AND ELECTROSTATIC INDUCTION CONVERSION DEVICE COMPRISING THE SAME

摘要

Disclosed are an electret having improved surface potential and an electrostatic induction conversion device comprising such an electret. Specifically disclosed is an electret obtained by spin coating a fluorine-containing polymer composition for coating over a copper substrate and firing the coated copper substrate. The fluorine-containing polymer composition for coating contains a fluorine-containing polymer having a ring structure in the main chain, a silane coupling agent, an aprotic fluorine-containing solvent, and a fluorine-containing alcohol as a protic fluorine-containing solvent.