Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Patent
1997-02-26
2000-06-06
Chapman, Mark
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
H01L 2500
Patent
active
060721170
ABSTRACT:
A photovoltaic device comprising an opaque substrate having an irregular surface structure comprising a plurality of linear irregularities or recesses arranged therein and a photoelectric conversion layer formed on said irregular surface structure of said substrate, wherein said plurality of linear irregularities or recesses have a center line average roughness Ra(X) of 15 nm to 300 nm when scanned in a direction parallel to the linear irregularities or recesses, a center line average roughness Ra(Y) of 20 nm to 600 nm when scanned in a direction perpendicular to the linear irregularities or recesses, and a Ra(X)/Ra(Y) ratio of 0.8 or less.
REFERENCES:
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patent: 4571448 (1986-02-01), Barnett
patent: 4598306 (1986-07-01), Nath et al.
The 3rd Photovoltaic Science and Engineering Conference in Japan 1982; Japanese Journal of Applied Physics, vol. 21 (1982), Supplement 21-2, pp. 287-290, T. Fukatsu et al., "Effects of Substrate Surface Condition on a-Si Photovoltaic Characteristics".
Sixteenth IEEE Photovoltaic Specialists Conference-1982, Sep. 27-30, 1982, pp. 1423-1424, T. Tiedje et al., "Enhanced Optical Absorpiton Produced By Light Trapping In Amorphous Silicon Films".
Sixteenth IEEE Photovoltaic, Specialists Conference-1982, Sep. 27-30, 1982, pp. 1425-1426, H. Deckman et al., "Optical Enhancement Of a-Sih Solar Cells".
Applied Physics Letters, vol. 43, No. 7, Oct. 1, 1983, Y. Hamakawa et al., "New Types Of High Efficiency Solar Cells Based On a-Si", pp. 644-646.
Matsuda Koichi
Matsuyama Jinsho
Canon Kabushiki Kaisha
Chapman Mark
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