Abstract:
Highlight blooming is reduced in semiconductor diode array camera targets by forming electron-hole recombination sites intermediate the diodes. These sites collect excess holes created by intense light images incident on the target and reduce blooming. The recombination sites are formed by selectively irradiating regions of the semiconductor substrate between the diodes and beyond the limits of the depletion region surrounding the reverse-biased diodes. Useful forms of radiation which produce these recombination sites include electron beam and ultraviolet rays.
Abstract:
A thermal gradient zone melting technique is employed to migrate an array of metal buttons through a body of semiconductor material to form high aspect ratio P-N junctions therein. Semiconductor devices embodying such P-N junctions are suitable for employment in X-ray and infrared detection and imaging. Each button preferably has the configuration of an equilateral triangle and the array preferably has a hexagonal configuration.