Three-dimensional heterojunction isotope battery based on carbon nanotube film and preparation method of three-dimensional heterojunction isotope battery

Abstract

The invention discloses a three-dimensional heterojunction isotope battery based on a carbon nanotube film and a preparation method of the three-dimensional heterojunction isotope battery. A transduction structure of the isotope battery comprises a substrate, a back electrode, a patterned insulating layer, and a positive electrode on the insulating layer; the front side of the substrate of the transduction structure is provided with a three-dimensional array structure, and the carbon nanotube film is deposited on the surface of the front side of the first substrate; a heterojunction is formed on a contact part of the carbon nanotube film and the substrate so as to form ohmic contact with the positive electrode; a source structure comprises a substrate and a radioactive isotope film on the surface of the substrate; the source structure and the transduction structure are aligned and sealed together, contact parts of the source structure and the transduction structure are electrically isolated, and the radioactive isotope film of the source structure and the heterojunction of the transduction structure are opposite to each other and are positioned in a cavity formed by sealing. By the three-dimensional structure in the isotope battery, an action area of a device is effectively enlarged, and the performance of the device is improved. Moreover, due to the heterojunction formed by contacting the carbon nanotube film with other semiconductor materials, the conversion efficiency of the isotope battery is improved.

Description

technical field [0001] The invention relates to a miniature isotope battery, in particular to a three-dimensional carbon nanotube heterojunction-based isotope battery and a preparation method thereof, belonging to the field of micro-energy in micro-mechanical electronic systems. Background technique [0002] Micro-Electro-Mechanical Systems Technology (abbreviated as MEMS) is a micro-system that integrates micro-sensors, micro-actuators, control, interface, and power circuits based on micro / nano-level design and manufacturing. In the past few decades, micro-electromechanical systems have been developing rapidly, and with the reduction of the size of electronic systems, the development of micro-energy systems with small volume, light weight, high energy density, long life and continuous energy supply is of great importance to micro-electromechanical systems. significance. At present, micro-energy systems are becoming one of the research hotspots at home and abroad, such as m...

AI Technical Summary

Problems solved by technology

In recent years, researchers at home and abroad have either improved the open circuit voltage and short circuit current of the battery by changing the structure of the silicon-based pn junction, or improved the radiation resistance of the device by using radiation-resistant materials such as GaN, SiC, etc., but the results are not satisfactory. not very significant

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