Light-detectable solid thin-film secondary battery
First Claim
1. A photosensitive solid-state thin-film lithium-ion secondary cell comprising:
- a substrate;
a photosensitive negative-electrode active material layer comprising porous silicon formed on said substrate by anodizing;
a solid electrolyte layer formed on said photosensitive negative-electrode active material;
a positive-electrode active material layer formed on said solid electrolyte layer; and
a current collector layer formed on said positive-electrode active material layer,wherein the photosensitive solid-state thin-film lithium-ion secondary cell is structured so as to make said photosensitive negative-electrode active material layer receive extraneous light,wherein extraneous light is to be constantly detected by utilizing a change in open-circuit voltage of the cell caused when the extraneous light is incident on the photosensitive negative-electrode active material layer.
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Accused Products
Abstract
To provide novel devices constituting light detection systems with a simple configuration, a low maintenance cost, a reduced size and weight, and high reliability by integrating light detection components and power supplies.
A photosensitive solid-state thin-film lithium-ion secondary cell including a photosensitive negative-electrode active material layer as a component, wherein extraneous light can be constantly detected by utilizing a change in open-circuit voltage of the cell caused when the extraneous light is incident on the photosensitive negative-electrode active material layer. Lithium ions can be readily received and emitted and light in a broad wavelength range over a near-infrared light range, the entire visible light range, and a near-ultraviolet light range can be detected by utilizing a porous silicon layer having a controlled porosity as the negative-electrode active material layer.
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Citations
6 Claims
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1. A photosensitive solid-state thin-film lithium-ion secondary cell comprising:
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a substrate; a photosensitive negative-electrode active material layer comprising porous silicon formed on said substrate by anodizing; a solid electrolyte layer formed on said photosensitive negative-electrode active material; a positive-electrode active material layer formed on said solid electrolyte layer; and a current collector layer formed on said positive-electrode active material layer, wherein the photosensitive solid-state thin-film lithium-ion secondary cell is structured so as to make said photosensitive negative-electrode active material layer receive extraneous light, wherein extraneous light is to be constantly detected by utilizing a change in open-circuit voltage of the cell caused when the extraneous light is incident on the photosensitive negative-electrode active material layer. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification