NL7610833A - Photoconductive selenium film target for image pick=up tube - has layered construction with addn. of tellurium and arsenic in non-homogeneous distribution to give improved long term performance - Google Patents

Photoconductive selenium film target for image pick=up tube - has layered construction with addn. of tellurium and arsenic in non-homogeneous distribution to give improved long term performance

Info

Publication number
NL7610833A
NL7610833A NL7610833A NL7610833A NL7610833A NL 7610833 A NL7610833 A NL 7610833A NL 7610833 A NL7610833 A NL 7610833A NL 7610833 A NL7610833 A NL 7610833A NL 7610833 A NL7610833 A NL 7610833A
Authority
NL
Netherlands
Prior art keywords
elements
concn
layer
atom
added
Prior art date
Application number
NL7610833A
Other languages
Dutch (nl)
Other versions
NL170065C (en
NL170065B (en
Original Assignee
Hitachi Ltd En Nippon Hoso Kyo
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 Hitachi Ltd En Nippon Hoso Kyo filed Critical Hitachi Ltd En Nippon Hoso Kyo
Priority to NL7610833A priority Critical patent/NL170065C/en
Publication of NL7610833A publication Critical patent/NL7610833A/en
Publication of NL170065B publication Critical patent/NL170065B/en
Application granted granted Critical
Publication of NL170065C publication Critical patent/NL170065C/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/45—Charge-storage screens exhibiting internal electric effects caused by electromagnetic radiation, e.g. photoconductive screen, photodielectric screen, photovoltaic screen
    • H01J29/451—Charge-storage screens exhibiting internal electric effects caused by electromagnetic radiation, e.g. photoconductive screen, photodielectric screen, photovoltaic screen with photosensitive junctions

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Light Receiving Elements (AREA)

Abstract

Photoconductive film comprises (a) a first layer contg. selenium together with tellurium and elements which can form deep levels in selenium, in an average concn. of =10 atom %; (b) a second layer contg. Se to which Te is added with a continuous distribution of concn. with a peak value of >=15 atom% %. Film further comprises (c) a third layer contg. Se to which elements which can form deep levels in Se are added with a continuous distribution of concn. with a peak value of >=15 atom %; and (d) a fourth layer contg. Se to which Te and elements which can form deep levels in selenium are added, in an average concn. of =10 atom %. Pref. the thickness of the layers (a), (b) and (c) are >100 angstroms, 200-5000 angstroms, and 500-300 angstroms respectively. The elements which can form deep levels in Se are e.g. As, Sb, Bi, Si and Ge. The concn. of elements added to the third layer is pref. greatest at the interface with the second layer, and falls gradually towards the interface with the fourth layer. The films are built up e.g. by successive deposition of layers is not >100 angstroms thick to give the required concn. distribution of the elements. These layers can be formed e.g. by stagewise vaporisation of the respective materials. The films are esp., useful as photoconductive targets in image pick-up tubes with rectifying contact layer. Variations in signal strength and the retained image effect normally obtd. when the same object is exposed continuously are eliminated.
NL7610833A 1976-09-30 1976-09-30 APPARATUS, PROVIDED WITH A COMPOSITE PHOTOGRAPHIC LAYER OF A COMPONENTLY CONTAINING MATERIAL, INCLUDING COUNTERMARK AND AT LEAST ONE OF THE GROUP ELEMENTS COMPRISING ARSENIC, ANTI-MONEY, BISMUTH, SILICONE AND GERMAN. NL170065C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7610833A NL170065C (en) 1976-09-30 1976-09-30 APPARATUS, PROVIDED WITH A COMPOSITE PHOTOGRAPHIC LAYER OF A COMPONENTLY CONTAINING MATERIAL, INCLUDING COUNTERMARK AND AT LEAST ONE OF THE GROUP ELEMENTS COMPRISING ARSENIC, ANTI-MONEY, BISMUTH, SILICONE AND GERMAN.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7610833A NL170065C (en) 1976-09-30 1976-09-30 APPARATUS, PROVIDED WITH A COMPOSITE PHOTOGRAPHIC LAYER OF A COMPONENTLY CONTAINING MATERIAL, INCLUDING COUNTERMARK AND AT LEAST ONE OF THE GROUP ELEMENTS COMPRISING ARSENIC, ANTI-MONEY, BISMUTH, SILICONE AND GERMAN.

Publications (3)

Publication Number Publication Date
NL7610833A true NL7610833A (en) 1978-04-03
NL170065B NL170065B (en) 1982-04-16
NL170065C NL170065C (en) 1982-09-16

Family

ID=19826989

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7610833A NL170065C (en) 1976-09-30 1976-09-30 APPARATUS, PROVIDED WITH A COMPOSITE PHOTOGRAPHIC LAYER OF A COMPONENTLY CONTAINING MATERIAL, INCLUDING COUNTERMARK AND AT LEAST ONE OF THE GROUP ELEMENTS COMPRISING ARSENIC, ANTI-MONEY, BISMUTH, SILICONE AND GERMAN.

Country Status (1)

Country Link
NL (1) NL170065C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426328A1 (en) * 1978-05-19 1979-12-14 Philips Nv SHOOTING TUBES FOR TELEVISION

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426328A1 (en) * 1978-05-19 1979-12-14 Philips Nv SHOOTING TUBES FOR TELEVISION

Also Published As

Publication number Publication date
NL170065C (en) 1982-09-16
NL170065B (en) 1982-04-16

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