公开(公告)号：US4555720A

公开(公告)日：1985-11-26

申请号：US463210

申请日：1983-02-02

Applicant: John B. Readhead

Inventor： John B. Readhead

IPC: G01J5/02 ,  G01J5/28 ,  H01L27/14 ,  H01L27/146 ,  H01L27/148 ,  H01L31/10 ,  H01L31/101 ,  H01L27/12

CPC classification number: H01L31/101 ,  H01L27/14881 ,  H01L2224/24146 ,  H01L2924/01327

Abstract: A multicolor or other multilevel infrared detector comprises at least one first detector element formed in a first portion of a lower body, e.g. of cadmium mercury telluride. At least one second detector element, having different detector characteristics, is formed in an upper body, e.g. of cadmium mercury telluride. The lower body is divided, preferably by ion etching into at least two (and more usually three or more) portions separated from each other by gaps. The gaps in the lower body are bridged by the upper body. Electrical connections to the second detector elements comprises the separate portions of the lower body. The electrical connections include metallization layers extending from the top to the substrate on which the lower body is mounted. The substrate may be of insulating material, e.g. sapphire, or it may be for example a silicon CCD for processing signals from the detector elements.

Abstract translation: 多色或其他多级红外检测器包括形成在下体的第一部分中的至少一个第一检测元件，例如。 的碲化汞镉。 具有不同检测器特性的至少一个第二检测器元件形成在上体中，例如， 的碲化汞镉。 优选地，通过离子蚀刻将下体分成通过间隙彼此分离的至少两个（并且更通常三个或更多个）部分。 下身的间隙由上身桥接。 与第二检测器元件的电连接包括下体的分离部分。 电连接包括从顶部延伸到其上安装有下体的基底的金属化层。 衬底可以是绝缘材料，例如， 蓝宝石也可以是例如用于处理来自检测器元件的信号的硅CCD。

公开(公告)号：US4467201A

公开(公告)日：1984-08-21

申请号：US355837

申请日：1982-03-08

Applicant: Anthony Blackburn ,  John B. Readhead

Inventor： Anthony Blackburn ,  John B. Readhead

IPC: H04N5/335 ,  H01L27/14 ,  H01L27/146 ,  H01L31/0224 ,  H01L31/09 ,  H04N5/33 ,  H01J31/49

CPC classification number: H01L31/0224 ,  H01L27/14669 ,  H01L31/09

Abstract: In a thermal-radiation imaging device a plurality of photoconductive detector elements are present on a common substrate. Each detector element comprises a semiconductor strip on which biasing-electrode means are spaced for causing a bias current predominantly of majority charge carriers to flow along each strip. The bias current supports an ambipolar drift of radiation-generated charge carriers in the opposite direction. Readout means for detecting these carriers comprises a connection protruding from one side of the strip. A recess extends across part of the width of the strip at the side opposite the readout connection. The readout connection of one strip extends into the recess of an adjacent strip so that a compact, closely-spaced and substantially aligned arrangement of the parallel detector elements can be obtained. Advantageous readout characteristics can also result from the narrowing of the drift path by the recess which constricts the bias current and increases the electric field in the readout area. An increase in responsivity and a shortened effective readout length can be obtained.

Abstract translation: 在热辐射成像装置中，多个光电导检测器元件存在于共同的基板上。 每个检测器元件包括半导体条，偏置电极装置在该半导体条上间隔开，以使主要占多数电荷载流子的偏置电流沿每条流动。 偏置电流支持辐射产生的电荷载流子在相反方向上的双极漂移。 用于检测这些载体的读出装置包括从条的一侧突出的连接。 凹槽在与读出连接相对的一侧延伸穿过条的宽度的一部分。 一个条的读出连接延伸到相邻条的凹槽中，使得可以获得平行检测器元件的紧凑的，紧密间隔的和基本对准的布置。 有利的读出特性也可能是通过凹槽使漂移路径变窄而导致的，该凹槽会限制偏置电流并增加读出区域中的电场。 可以获得响应度的增加和有效读出长度的缩短。

公开(公告)号：US4625389A

公开(公告)日：1986-12-02

申请号：US750193

申请日：1985-07-01

Applicant: John B. Readhead

Inventor： John B. Readhead

IPC: G01J5/02 ,  G01J5/28 ,  H01L27/14 ,  H01L27/146 ,  H01L27/148 ,  H01L31/10 ,  H01L31/101 ,  H01L21/86 ,  H01L21/90 ,  H01L21/94 ,  H01L31/00

CPC classification number: H01L31/101 ,  H01L27/14881 ,  H01L2224/24146 ,  H01L2924/01327

Abstract: A multicolor or other multilevel infrared detector comprises at least one first detector element formed in a first portion of a lower body, e.g. of cadmium mercury telluride. At least one second detector element, having different detector characteristics, is formed in an upper body, e.g. of cadmium mercury telluride. The lower body is divided, preferably by ion etching into at least two (and more usually three or more) portions separated from each other by gaps. The gaps in the lower body are bridged by the upper body. Electrical connections to the second detector elements comprises the separate portions of the lower body. The electrical connections include metallization layers extending from the top to the substrate on which the lower body is mounted. The substrate may be of insulating material, e.g. sapphire, or it may be for example a silicon CCD for processing signals from the detector elements.

公开(公告)号：US4482807A

公开(公告)日：1984-11-13

申请号：US355839

申请日：1982-03-08

Applicant: Anthony Blackburn ,  John B. Readhead

Inventor： Anthony Blackburn ,  John B. Readhead

IPC: H04N5/335 ,  H01L27/14 ,  H01L27/146 ,  H01L31/0224 ,  H01L31/09 ,  H04N5/33 ,  H01J31/49

CPC classification number: H01L31/09 ,  H01L27/14669 ,  H01L31/0224

Abstract: In a thermal-radiation imaging device a detector element comprises a semiconductor strip, e.g. of n-type cadmium mercury telluride, on which biasing-electrode means are spaced for causing a bias current predominantly of majority charge carriers to flow along each strip. The bias current supports an ambipolar drift of radiation-generated charge carriers in the opposite direction. A readout area is present in a part of the drift path between a pair of spaced electrodes. At least one space extends locally across the width of strip in-between the spaced readout electrodes from at least one side of the readout area to narrow at least locally the drift path in the readout area and to increase the electric field. A detector having increased responsivity results, particularly when at least two spaces extend from opposite sides to form a meandering drift path in the read-out area. Close spacing of the readout electrodes permits good image resolution even with a long meandering drift path.

Abstract translation: 在热辐射成像装置中，检测器元件包括半导体条，例如。 n型碲化镉碲化合物，偏置电极装置间隔开，以使主要是多数电荷载流子的偏置电流沿每个条带流动。 偏置电流支持辐射产生的电荷载流子在相反方向上的双极漂移。 读出区域存在于一对间隔开的电极之间的漂移路径的一部分中。 至少一个空间在读出区域的至少一侧的间隔读出电极之间的条带的宽度上局部延伸，至少局部地使读出区域中的漂移路径变窄，并增加电场。 具有增加的响应度结果的检测器，特别是当至少两个空间从相对侧延伸以在读出区域中形成曲折漂移路径时。 读出电极的间距即使在较长的曲折漂移路径下也能获得良好的图像分辨率。