SEMICONDUCTOR DEVICE CONCEPTS
GENERAL ELECTRIC CO SCHENECTADY NY
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The Cd-CdS liquidus was measured between 700 de grees and 1250 degrees C. In the low-temperature region, the liquidus rises exponentially with temperature similar to that observed in III-V semiconducting compound systems. A new electri cally active defect center, believed to be a native double acceptor, was observed in CdS. It shows identical behavior to a center concurrently observed in CdTe in this laboratory. These centers are formed during heat treatment in a Cd atmosphere. The centers are similar to the double acceptor centers observed in Ge in that they become very effective hole traps at low temperatures.
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