HgCdTe Mosaic Arrays For Hybrid Applications

W. E. Tennant

doi:10.1117/12.958494

7 May 1980 HgCdTe Mosaic Arrays For Hybrid Applications

W. E. Tennant

Proceedings Volume 0217, Advances in Focal Plane Technology; (1980) https://doi.org/10.1117/12.958494
Event: 1980 Los Angeles Technical Symposium, 1980, Los Angeles, United States

Abstract

The demands of many mission requirements have greatly increased the need for a common approach to IR focal planes that is flexible enough to meet these demands without major changes of technology. Hybrid HgCdTe focal planes represent a potential solution to these mission requirements. Recent developments in HgCdTe liquid phase epitaxial technology have produced device quality epitaxial layers grown on transparent CdTe substrates with cut-off wavelength uniformity of < ± 0.1 μm at 11 μm and < ± 0.01 μm at 4.8 μm. Devices fabricated in these layers by ion implantation show broad band spectral response with high quantum efficiency (up to 79% external without Ar coating). RoA values appear to be limited by bulk properties at temperatures at least as low as 80K for all wavelengths investigated. Both MWIR and LWIR devices have exhibited limited diffusion volume enhancement of performance at temperatures where diffusion mechanisms dominate reverse bias current characteris-tics. Hybrid structures have been fabricated and evaluated; the preliminary results indicate the suitability of these mosaics for hybrid focal plane applications.

Citation Download Citation

W. E. Tennant "HgCdTe Mosaic Arrays For Hybrid Applications", Proc. SPIE 0217, Advances in Focal Plane Technology, (7 May 1980); https://doi.org/10.1117/12.958494

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