The processing conditions to obtain high-quality and repeatable polysilicon films are described. These include substrate preparation, the deposition procedure, reactor configuration, and postdeposition treatment. Examples of large-aspect-ratio microstructures such as long, thin beams and tuning forms for sensor applications and large-area diaphragms for piezoresistive microphones and X-ray masks are presented to illustrate the potential of polysilicon films that are in tension.<
Published in:
Solid-State Sensor and Actuator Workshop, 1988. Technical Digest., IEEE
Date of Conference: 6-9 June 1988