Photovoltaic CdHgTe - Silicon Hybrid Focal Planes

Abstract

Photovoltaic C.M.T.-Si hybrids have been demonstrated in a number of array configurations from 32 x 1 to 64 x 64. The photodiode and hybrid interconnection technology is based on the loophole technique, which has the main advantages of high density and therefore good material utilisation in two dimensional arrays. For linear arrays, the CCD multiplexer is suitable for most applications. For two-dimensional arrays,however,the co-ordinate addressed array may offer significant benefit over the CCq particularly at long wavelength. 32 x 32 arrays of both types have been fabricated. A co-ordinate addressed array of 11.4pm cut-off produced an NETD of < 0.1K in an imaging demonstration.