GB720842A - Improvements relating to the preparation of cadmium selenide - Google Patents

Improvements relating to the preparation of cadmium selenide

Info

Publication number
GB720842A
GB720842A GB8104/53A GB810453A GB720842A GB 720842 A GB720842 A GB 720842A GB 8104/53 A GB8104/53 A GB 8104/53A GB 810453 A GB810453 A GB 810453A GB 720842 A GB720842 A GB 720842A
Authority
GB
United Kingdom
Prior art keywords
cadmium
selenide
solution
nitric acid
prepared
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.)
Expired
Application number
GB8104/53A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB720842A publication Critical patent/GB720842A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B19/00—Selenium; Tellurium; Compounds thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

Cadmium selenide is prepared by reacting an aqueous solution of a cadmium salt with hydrogen selenide whilst maintaining a pH of 3-7, preferably 6. The cadmium selenide may be removed by decanting or otherwise. In the example, hydrogen selenide is prepared by dropping water onto aluminium selenide obtained by igniting aluminium powder and selenium, and passed into a solution of cadmium nitrate obtained by diluting a solution of cadmium in nitric acid, the concentrated solution having been previously heated until nitric acid was exhausted. The nitric acid liberated by the hydrogen selenide was neutralized by constantly adding sodium hydroxide solution to maintain the pH as near as possible to 6. Cadmium selenide was recovered by centrifuging, washing, drying and baking the precipitate under vacuum for an hour. Cadmium acetate, chlorate, chloride or sulphate may be used in place of the nitrate and sodium hydroxide may be replaced by other basic agents. If the pH exceeds 7, cadmium hydroxide is produced.
GB8104/53A 1952-03-29 1953-03-24 Improvements relating to the preparation of cadmium selenide Expired GB720842A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US720842XA 1952-03-29 1952-03-29

Publications (1)

Publication Number Publication Date
GB720842A true GB720842A (en) 1954-12-29

Family

ID=22105457

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8104/53A Expired GB720842A (en) 1952-03-29 1953-03-24 Improvements relating to the preparation of cadmium selenide

Country Status (1)

Country Link
GB (1) GB720842A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1297483C (en) * 2003-12-10 2007-01-31 山东师范大学 Method for synthesizing cadmium hydroxide single-crystal nanowire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1297483C (en) * 2003-12-10 2007-01-31 山东师范大学 Method for synthesizing cadmium hydroxide single-crystal nanowire

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