Transparent photovoltaic module

Details Transparent photovoltaic module Transparent photovoltaic module

1985-06-04

1987-05-05

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Panel or array

136244, 136246, 136249, 136256, 136258, 136259, 29572, 427 74, 52173R, 180 22, 180 653, 114201R, F24J 302, H01L 3106, H01L 2714

Patent

active

046634959

ABSTRACT:
A thin film photovoltaic module has transparent electrodes on front and back surfaces of a semiconductive layer. In one embodiment, both transparent electrodes pass light to the semiconductive layer for photovoltaic purposes. In another embodiment, the back electrode passes light which enters through the front electrode and is not absorbed by the semiconductive layer, so that the module is selectively transparent to the unabsorbed light. The spectral makeup of the transmitted light is controlled by controlling the optical characteristics of the layers of the module. The index of refraction of the back electrode is a primary source of transmission control, along with the refractive index of the front electrode and the thickness of the semiconductive layer itself. Light transmitted by the module can be used for nonphotovoltaic purposes, such as illuminating the interior of a vehicle or dwelling, or may be directed back into the semiconductive layer by a reflective surface behind the back electrode.

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