Chemistry: electrical current producing apparatus – product – and – Deferred action type – Responsive to light
Patent
1977-07-08
1978-10-10
Mack, John H.
Chemistry: electrical current producing apparatus, product, and
Deferred action type
Responsive to light
136 89NB, 01M 630, H01L 3104
Patent
active
041197682
ABSTRACT:
A photovoltaic battery in which a body of a photoactive material is disposed between first and second layers of ionically conductive material. The second layer is relatively high in ionic conductivity as compared to the first layer. An electric field oriented toward said second layer is induced through the photoactive body by virtue of the difference in chemical potential between the first and second layers of ionically conductive material. An electronically conductive body is disposed on the side of the first layer opposite from the photoactive body. The first layer in conjunction with the electronically conductive body acts as the positive electrode, the second layer acts as the negative electrode, and the photoactive body disposed therebetween acts as a solid electrolyte in the battery. When the photoactive body is exposed to visible light, it generates positive ions which are attracted to the negative electrode and electrons which are trapped by the electronically conductive body of the composite positive electrode. Charging of the battery thereby occurs as a result of the reaction between the photoactive body and light photons. During discharge of the battery, positive ions leave the negative electrode and enter the solid electrolyte comprising the photoactive body.
REFERENCES:
patent: 3057945 (1962-10-01), Rinnovatore et al.
patent: 3247427 (1966-04-01), Kallmann et al.
Comfort James T.
Grossman Rene'E.
Hiller William E.
Mack John H.
Texas Instruments Incorporated
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