Amorphous silicon solar battery

Details Amorphous silicon solar battery Amorphous silicon solar battery

1986-01-29

1987-06-23

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

136256, 136258, 357 30, 357 59, 357 65, 357 71, H01L 3106

Patent

active

046754695

ABSTRACT:
An amorphous silicon solar battery is formed by applying a sequence of layers on a transparent substrate, preferably of glass. A transparent electrode film of conductive material is applied on the substrate, followed by an amorphous silicon semi-conductor, which is in turn followed by a back electrode film of transparent conductive film. In addition, a metallic film may be formed on the back electrode. The surface roughness of the first transparent conductive film is such that the average grain diameter is in the range of 0.1-0.9 micron. Impinging light rays are refracted at random by this uneven surface. The result is an increase in the current density of the solar battery, due to the increased optical paths of the light rays through the semi-conductor material and the increased reflection effect at the second transparent conductive film.

REFERENCES:
patent: 4442310 (1984-04-01), Carlson et al.
patent: 4500743 (1985-02-01), Hayashi et al.
H. Iida et al., IEEE Electron Device Letters, vol. EDL-4, May 1983, pp. 157-159.
H. W. Deckman et al., J. Vac. Sci. Technol., vol. A1 (2), Apr.-Jun. 1983, pp. 578-582.

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