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Expired Canadian patentCanada

Pin junction photovoltaic element with p or n-type semiconductor layercomprising non-single crystal material containing zn, se, h in an amount of 1 to 4 atomic % and a dopant and i-type semiconductor layer comprising non-single crystal si(h,f) material

CA 1299716 C · Owner: Arao, Kozo · Inventors: Fujioka, Yasushi; Nakagawa, Katsumi; Sakai, Akira

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Abstract From the Canadian patent

An improved pin junction photovoltaic element which causes photoelectromotive force by the junction of a p-type semiconductor layer, an i-type semiconductor layer and an n-type semiconductor layer, characterized in that at least one of said p-type semiconductor layer and said n-type semiconductor layer comprises a p-typed or n-typed ZnSe:H:M film, where M is a dopant of p-type or n-type: the amount of the H is in the range of from 1 to 4 atomic %: and said film contains crystal grain domains in a proportion of 65 to 85 vol % per unit volume; and said i-type semiconductor layer comprises a non-single crystal Si(H,F) film or a nonsingle crystal Si(C,Ge)(H,F) film.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 18, 1988
GrantedApril 28, 1992
Term endedApril 28, 2009
Patent numberCA 1299716 C
Classification (IPC)H01L31/06 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 18, 1988Patent grantedApril 28, 1992Term endedApril 28, 2009

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