Thinning and mounting a Texas Instruments 3-phase CCDThin CCDs with precise control of thickness and surface quality allow astronomers to optimize chips for specific applications. A means of mechanically thinning a TI 800 x 800 CCD with an abrasive slurry of aluminum oxide is presented. Using the same techniques, the abrasives can be replaced with a chemical solution to eliminate subsurface damage. A technique of mounting the CCD which retains the high quality surface generated during thinning is also demonstrated. This requires the backside of the chip to be bonded to a glass window which closely matches silicon's thermal expansion properties. Thinned CCDs require backside treatment to enhance blue and UV quantum efficiency. Two methods are discussed which may be effective with this mounting system.
Document ID
19870049164
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lesser, M. P. (Arizona Univ. Tucson, AZ, United States)
Leach, R. W. (Arizona Univ. Tucson, AZ, United States)
Angel, J. R. P. (Steward Observatory Tucson, AZ, United States)