LIGHT-SENSITIVE STORAGE DEVICE INCLUDING DIODE ARRAY AND METHOD FOR PRODUCING THE ARRAY
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Abstract
A LIGHT-SENSITIVE TARGET STRUCTURE FOR USE IN AN IMAGING DEVICE COMPRISES A SEMICONDUCTING WAFER HAVING A HIGH DENSITY ARRAY OF JUNCTION DIODES IN ONE SURFACE OF THE WATER. THE DIODE ARRAY IS PRODUCED BY: (1) FORMING ISLANDS OF GALLIUM, INDIUM, THALLIUM, LEAD OR TIN; (2) EITHER DIFFUSING ATOMS OF GALLIUM, INDIUM OR THALLIUM DIRECTLY INTO THE WATER OR SELECTIVELY DIFFUSING AN IMPURITY SUCH AS BORON THROUGH MOLTEN ISLANDS OF LEAD OR TIN; (3) FORMING AN OXIDE LAYER OVER THE ENTIRE ISLAND-BEARING SURFACE; AND (4) SELECTIVELY REMOVING PORTIONS OF THE OXIDE LAYER OVER THE METAL ISLANDS, TO EXPOSE THE ISLANDS.
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