Hydrogenated amorphous-silicon image sensors

Recent developments in hydrogenated amorphous-silicon image sensors are reviewed, and their specific problems discussed. One of the most exciting features of amorphous silicon is its large-area capability. Principal development efforts are therefore directed toward contact-type linear image sensors. Contact-type area sensors represent a new challenge and are already being developed. Amorphous silicon is also a good candidate for future high-definition video image sensors. Hybrid technology sensors (direct-readout and matrix-readout sensors), integrated sensors (photodiode and photoconductor types), optical scanning sensors, and other image sensors are reviewed