GB2019649A - Imaging devices and systems - Google Patents

Imaging devices and systems

Info

Publication number
GB2019649A
GB2019649A GB7912154A GB7912154A GB2019649A GB 2019649 A GB2019649 A GB 2019649A GB 7912154 A GB7912154 A GB 7912154A GB 7912154 A GB7912154 A GB 7912154A GB 2019649 A GB2019649 A GB 2019649A
Authority
GB
United Kingdom
Prior art keywords
electrode
strip
modified
diffusion length
spread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7912154A
Other versions
GB2019649B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB7912154A priority Critical patent/GB2019649B/en
Publication of GB2019649A publication Critical patent/GB2019649A/en
Application granted granted Critical
Publication of GB2019649B publication Critical patent/GB2019649B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
    • H01L31/09—Devices sensitive to infrared, visible or ultraviolet radiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
    • H01L27/144—Devices controlled by radiation
    • H01L27/146—Imager structures
    • H01L27/14665—Imagers using a photoconductor layer
    • H01L27/14669—Infrared imagers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Solid State Image Pick-Up Elements (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

In order to improve the resolution and performance of an imaging device (1) comprising an elongated strip (3) of photoconductive semiconductor material having first (5) and second (7) current electrodes and an associated read-out electrode (9, 9') the strip (3) is modified so that generated photocarriers are caused to drift in a flow path in which their diffusive spread in the longitudinal direction, from the first electrode (5) to the second electrode (7), is limited to a spread substantially less than the diffusion length characteristic of the material. In particular the strip (3) may be modified by a plurality of fine interdigital slots (A) extending alternately from opposite sides of the strip (3) and which, in at least a terminal region (RE) adjacent the second electrode (7), are spaced apart by a distance less than the diffusion length. The device may be used in either a scanned, or a stationary, image system (Fig. 5). <IMAGE>
GB7912154A 1978-04-25 1979-04-06 Imaging device and systems Expired GB2019649B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7912154A GB2019649B (en) 1978-04-25 1979-04-06 Imaging device and systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1627978 1978-04-25
GB7912154A GB2019649B (en) 1978-04-25 1979-04-06 Imaging device and systems

Publications (2)

Publication Number Publication Date
GB2019649A true GB2019649A (en) 1979-10-31
GB2019649B GB2019649B (en) 1982-05-06

Family

ID=26251942

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7912154A Expired GB2019649B (en) 1978-04-25 1979-04-06 Imaging device and systems

Country Status (1)

Country Link
GB (1) GB2019649B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502846A1 (en) * 1981-03-30 1982-10-01 Secr Defence Brit PHOTOCONDUCTIVE DETECTOR
EP0061802A2 (en) * 1981-03-30 1982-10-06 Philips Electronics Uk Limited Imaging devices and systems
FR2514950A1 (en) * 1981-10-21 1983-04-22 United Kingdom Government PHOTOCONDUCTOR TAPE DETECTOR FOR FORMING THERMAL IMAGES
US4467201A (en) * 1981-03-30 1984-08-21 U.S. Philips Corporation Imaging devices and systems

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502846A1 (en) * 1981-03-30 1982-10-01 Secr Defence Brit PHOTOCONDUCTIVE DETECTOR
EP0061802A2 (en) * 1981-03-30 1982-10-06 Philips Electronics Uk Limited Imaging devices and systems
US4467201A (en) * 1981-03-30 1984-08-21 U.S. Philips Corporation Imaging devices and systems
US4482807A (en) * 1981-03-30 1984-11-13 U.S. Philips Corporation Imaging devices and systems
EP0061802A3 (en) * 1981-03-30 1985-07-31 Philips Electronic And Associated Industries Limited Imaging devices and systems
FR2514950A1 (en) * 1981-10-21 1983-04-22 United Kingdom Government PHOTOCONDUCTOR TAPE DETECTOR FOR FORMING THERMAL IMAGES
DE3238426A1 (en) * 1981-10-21 1983-05-05 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland Whitehall, London Photoconductive strip detector

Also Published As

Publication number Publication date
GB2019649B (en) 1982-05-06

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990405