Isotope battery based on carbon nanotube and preparation method thereof

Abstract

The invention discloses an isotope battery based on a carbon nanotube and a preparation method thereof. The isotope battery comprises a transduction structure and a source structure. The transduction structure includes a first substrate and an electrode pair which is formed by a metal electrode whose work function is higher than a carbon nanotube Fermi energy level and a metal electrode whose work function is lower than the carbon nanotube Fermi energy level on the first substate. A semiconducting carbon nanotube is arranged between the electrodes directionally, and two ends of the semiconducting carbon nanotube are in contact with the two metal electrodes respectively. The source structure includes a second substrate and a radioactive isotope film deposited on the second substrate. The source structure and the transduction structure are aligned and sealed together, a contact part of the above two structures is in electrical isolation, and the radioactive isotope film and the carbon nanotube are positioned in a cavity formed by sealing. The isotope battery of the invention has the advantages of small volume, high conversion efficiency, simple structure, easy realization, and capability of working in various complicated environments for a long time.

Description

technical field [0001] The invention relates to an isotope battery, in particular to a carbon nanotube isotope battery and a preparation method thereof, belonging to the field of micro-energy in micro-mechanical electronic systems. Background technique [0002] Micro-electromechanical systems (MEMS for short) technology developed on the basis of microelectronics technology is developing rapidly. From the trigger sensor of automobile airbags to the release of drugs in environmental monitoring systems, micro-electromechanical devices and systems have entered people's daily life. middle. However, micro-energy has always been the bottleneck in the development of micro-systems. Research on high-efficiency and long-life micro-energy has become a research hotspot for scholars from all over the world, such as micro-solar cells, micro-fuel cells, and environmental energy pickers. However, micro solar cells need light, fuel cells need to replenish fuel during work, and the energy con...

AI Technical Summary

Problems solved by technology

In recent years, researchers at home and abroad either increase the surface area of ​​the battery by changing the structure of the pn junction, thereby increasing the short-circuit current and open-circuit voltage of the battery, or improve the radiation resistance of the device by using radiation-resistant materials such as SiC, etc., but The efficiency improvement of beta radiation cells is not very significant

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