Fabrication of a 4H-SiC Betavoltaic Battery with Integrated Tritiated Titanium Source

HE Houjun; HAN Yuncheng; WANG Xiaoyu; REN Lei; MENG Xiangdong; ZHENG Mingjie

doi:10.11804/NuclPhysRev.42.2024044

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Nuclear Physics Review > 2025 > Accepted Manuscript > DOI: 10.11804/NuclPhysRev.42.2024044

HE Houjun, HAN Yuncheng, WANG Xiaoyu, REN Lei, MENG Xiangdong, ZHENG Mingjie. Fabrication of a 4H-SiC Betavoltaic Battery with Integrated Tritiated Titanium Source[J]. Nuclear Physics Review. DOI: 10.11804/NuclPhysRev.42.2024044

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Fabrication of a 4H-SiC Betavoltaic Battery with Integrated Tritiated Titanium Source

HE Houjun^{1, 2, 3,},
HAN Yuncheng^1, ,,
WANG Xiaoyu^{1, 4},
REN Lei^{1, 2},
MENG Xiangdong^{1, 2},
ZHENG Mingjie^{1, 2}

1.
Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
2.
University of Science and Technology of China, Hefei 230026, China
3.
School of Nuclear Science and Engineering, East China University of Technology, Nanchang 330013, China
4.
School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, Hubei, China

Funds: The Joint Funds of the National Natural Science Foundation of China (U2436201); National Natural Science Foundation of China (12305382); Directors Fund of Hefei Institute of Physical Sciences, Chinese Academy of Sciences (YZJJ202311-TS); Science and Technology Research Youth Project of Jiangxi Provincial Department of Education (GJJ200763); Research Project on Laboratory and Equipment Management in Jiangxi Provincial Higher Education Institutions (Z20JXS0001)

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Corresponding author:
HAN Yuncheng, E-mail: yuncheng.han@inest.cas.cn
Received Date: May 16, 2024
Revised Date: June 25, 2024
Available Online: March 16, 2025

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Abstract

Abstract

To enhance the performance of betavoltaic batteries, we investigated the effects of depletion region width, diffusion length, and electrode structure on output power. By optimizing the design and improving the fabrication processes of radioisotope source thickness, converter structure, and electrodes, we successfully developed a tritiated titanium-SiC-based betavoltaic battery with the form of integrated radioisotope source and converter. Compared to the test results using a discrete tritiated titanium and a converter, the integrated approach of tritiated titanium and the converter significantly improved the output performance of the betavoltaic battery, achieving a maximum output power of 21.4 nW. This performance is among the highest reported for similar betavoltaic batteries. This work provides a valuable reference for developing high-performance betavoltaic batteries.
- betavoltaic battery,
- SiC,
- tritiated titanium

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