ELECTROMOTIVE FORCE TYPE INFRARED DETECTOR CELL

    公开(公告)号:JP2001320074A

    公开(公告)日:2001-11-16

    申请号:JP80000195

    申请日:1995-03-15

    Abstract: PROBLEM TO BE SOLVED: To increase the detectability and diode resistance by reducing the volume and the cross-sectional area of a photovolatic diode without deteriorating the infrared ray absorption efficiency. SOLUTION: This infrared detector cell is provided with a plurality of linear segments disposed at equal intervals, and each linear segment forms an optical grating. Each segment is selectively added with impurities in the horizontal direction and forms a photovolatic diode. The linear segment is brought into ohmic contact between conductors to generate a single cell detection signal. The cell forms a diffractive resonance optical cavity. The array constituted by the cells generates an infrared image. There is disclosed a cell structure for receiving both a one-dimensional linearly polarized radiation and a two-dimensional unpolarized radiation.

    FORMATION OF CADMIUM MERCURY TELLURIDE CRYSTAL AND PRODUCTION OF INFRARED DETECTOR

    公开(公告)号:JPH06340499A

    公开(公告)日:1994-12-13

    申请号:JP12862293

    申请日:1993-05-31

    Abstract: PURPOSE:To improve reproducibility by growing a CdHGTe crystal on a semiconductor substrate by the use of a growth melt added with In in Te as the solvent and heat-treating the crystal in an Hg atmosphere to have a specified n-type carrier concn. CONSTITUTION:A CdTe substrate 3 is arranged in the recess 4a of a lower port 4, and a growth melt 7a mixed with n-type impurity In in Te as the solvent is put in an upper port 5 positioned on one end side and sealed with a lid member 6. The whole body is then heated in an H2 atmosphere to melt the growth melt 7a, which is then cooled to a specified temp., the upper port 5 is moved on the substrate 3 to cover the substrate 3 with the molten growth melt 7a, and a CdHg crystal 1a as grown contg. In is formed by epitaxial growth. The upper port 5 is moved to the other end side of the lower port 4 from the position on the substrate 3 after a specified time. The crystal is then heat-treated in an Hg atmosphere to obtain an n-type CdHgTe crystal having an n-type carrier concn. of 3X10 to 6X10 cm .

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