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US 12,462,944 B1Granted
Small form factor betavoltaic battery for use in applications requiring a volumetrically small power source
AssigneeCity Labs, Inc.
InventorPeter Cabauy
Life of this patent
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Abstract
A betavoltaic power source. The power source comprises a source of beta particles and a plurality of regions for collecting the beta particles and for generating electron hole pairs responsive to the beta particle flux. The power source is intended for in vivo applications and is scaled to fit within a catheter for placing the power source and one or more sensors or activators within a living body. Preferably, a secondary power source is charged by a current developed by the electron hole pairs for providing constant power to the sensors or activators.
Claims10
A betavoltaic power source comprising:
- a source of beta particles;
- an n-doped region for collecting the beta particles and for generating electron hole pairs responsive thereto, a first surface of the n-doped region disposed proximate the source of beta particles, a second surface of the n-doped region opposite the first surface of the n-doped region;
- a p-doped region for collecting the beta particles and for generating electron hole pairs responsive thereto, a first surface of the p-doped region in contact with the second surface of the n-doped region to form a junction;
- a secondary power source charged by current developed by the electron hole pairs;
- and
- wherein the betavoltaic power source has a volumetric dimension of 0.5 cubic centimeters or less.
3 more elements
Dependencies are inferred from the claim text.