Thick-film densification for pyroelectric sensors

Abstract

Densification and adherence of thick films are usually achieved by the addition of a glass frit in the screen printing ink. However, the glass may have a detrimental effect on the electrical properties of the active component as a ferroelectric. The addition of a new step - the application of a uniaxial or isostatic pressure on the dry film - to the standard processing of thick films, enables one to obtain a good densification of the films, even without the use of glass.