Fabrication and performance optimization of SiC-based betavoltaic batteries
BackgroundBetavoltaic nuclear batteries, leveraging beta-emitting radioisotopes, offer inherent advantages such as long-term reliability, high energy density, compact form factors, and robust resistance to interference, positioning them as promising power sources for self-powered portable or embedde...
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Science Press
2025-01-01
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| Series: | He jishu |
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| Online Access: | http://www.hjs.sinap.ac.cn/zh/article/doi/10.11889/j.0253-3219.2025.hjs.48.240117/ |
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| author | HE Houjun HAN Yuncheng WANG Xiaoyu REN Lei MENG Xiangdong ZHENG Mingjie |
| author_facet | HE Houjun HAN Yuncheng WANG Xiaoyu REN Lei MENG Xiangdong ZHENG Mingjie |
| author_sort | HE Houjun |
| collection | DOAJ |
| description | BackgroundBetavoltaic nuclear batteries, leveraging beta-emitting radioisotopes, offer inherent advantages such as long-term reliability, high energy density, compact form factors, and robust resistance to interference, positioning them as promising power sources for self-powered portable or embedded microdevices.PurposeThis study aims to enhance the conversion efficiency and output power of betavoltaic batteries with comprehensive consideration of the effects of backscattering, depletion region width, diffusion length, and electrode structure on charge collection efficiency, conversion efficiency, and output power.MethodsBy optimizing the device and electrode structure, i.e., introducing a PIN structure with "concentration gradient I- layer", optimizing the depletion region width, doping concentration and electrode materials, and increasing the spacing between electrode grid lines, 63Ni-SiC-based PIN junction betavoltaic batteries were successfully fabricated with higher overall conversion efficiency and output power. Both the Monte Carlo simulations and numerical computations were employed to obtain characteristic parameters of these developed batteries, and their performances were measured by experiments.ResultsThe fabricated batteries exhibit short-circuit currents, open-circuit voltages, output powers, and total conversion efficiencies ranging from 10.29 nA·cm-2 to 13.43 nA·cm-2, 1.32 V to 1.44 V, 11.66 nW·cm-2 to 14.69 nW·cm-2, and 2.24% to 2.82%, respectively. Compared with previous reported work, the open-circuit voltage, fill factor, and overall conversion efficiency increase by an average of 127.50%, 114.47%, and 512.10%, respectively. Moreover, the overall conversion efficiency is higher than those reported in the literature (0.5% to 1.99%).ConclusionsThese results indicate that the conversion efficiency and output power of betavoltaic batteries can be significantly improved by taking above-mentioned optimization measures, providing important theoretical guidance and experimental evidence for the design and fabrication of betavoltaic batteries. |
| format | Article |
| id | doaj-art-0b89794c6eff42fcaafd164d86fb82bb |
| institution | DOAJ |
| issn | 0253-3219 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Science Press |
| record_format | Article |
| series | He jishu |
| spelling | doaj-art-0b89794c6eff42fcaafd164d86fb82bb2025-08-20T02:57:41ZzhoScience PressHe jishu0253-32192025-01-0148101050301050310.11889/j.0253-3219.2025.hjs.48.2401170253-3219（2025）01-0133-10Fabrication and performance optimization of SiC-based betavoltaic batteriesHE Houjun0HAN Yuncheng1WANG Xiaoyu2REN Lei3MENG Xiangdong4ZHENG Mingjie5East China University of Technology, Nanchang 330013, ChinaHefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaBackgroundBetavoltaic nuclear batteries, leveraging beta-emitting radioisotopes, offer inherent advantages such as long-term reliability, high energy density, compact form factors, and robust resistance to interference, positioning them as promising power sources for self-powered portable or embedded microdevices.PurposeThis study aims to enhance the conversion efficiency and output power of betavoltaic batteries with comprehensive consideration of the effects of backscattering, depletion region width, diffusion length, and electrode structure on charge collection efficiency, conversion efficiency, and output power.MethodsBy optimizing the device and electrode structure, i.e., introducing a PIN structure with "concentration gradient I- layer", optimizing the depletion region width, doping concentration and electrode materials, and increasing the spacing between electrode grid lines, 63Ni-SiC-based PIN junction betavoltaic batteries were successfully fabricated with higher overall conversion efficiency and output power. Both the Monte Carlo simulations and numerical computations were employed to obtain characteristic parameters of these developed batteries, and their performances were measured by experiments.ResultsThe fabricated batteries exhibit short-circuit currents, open-circuit voltages, output powers, and total conversion efficiencies ranging from 10.29 nA·cm-2 to 13.43 nA·cm-2, 1.32 V to 1.44 V, 11.66 nW·cm-2 to 14.69 nW·cm-2, and 2.24% to 2.82%, respectively. Compared with previous reported work, the open-circuit voltage, fill factor, and overall conversion efficiency increase by an average of 127.50%, 114.47%, and 512.10%, respectively. Moreover, the overall conversion efficiency is higher than those reported in the literature (0.5% to 1.99%).ConclusionsThese results indicate that the conversion efficiency and output power of betavoltaic batteries can be significantly improved by taking above-mentioned optimization measures, providing important theoretical guidance and experimental evidence for the design and fabrication of betavoltaic batteries.http://www.hjs.sinap.ac.cn/zh/article/doi/10.11889/j.0253-3219.2025.hjs.48.240117/betavoltaic batterysic63niconversion efficienciesoutput powerohmic contacts |
| spellingShingle | HE Houjun HAN Yuncheng WANG Xiaoyu REN Lei MENG Xiangdong ZHENG Mingjie Fabrication and performance optimization of SiC-based betavoltaic batteries He jishu betavoltaic battery sic 63ni conversion efficiencies output power ohmic contacts |
| title | Fabrication and performance optimization of SiC-based betavoltaic batteries |
| title_full | Fabrication and performance optimization of SiC-based betavoltaic batteries |
| title_fullStr | Fabrication and performance optimization of SiC-based betavoltaic batteries |
| title_full_unstemmed | Fabrication and performance optimization of SiC-based betavoltaic batteries |
| title_short | Fabrication and performance optimization of SiC-based betavoltaic batteries |
| title_sort | fabrication and performance optimization of sic based betavoltaic batteries |
| topic | betavoltaic battery sic 63ni conversion efficiencies output power ohmic contacts |
| url | http://www.hjs.sinap.ac.cn/zh/article/doi/10.11889/j.0253-3219.2025.hjs.48.240117/ |
| work_keys_str_mv | AT hehoujun fabricationandperformanceoptimizationofsicbasedbetavoltaicbatteries AT hanyuncheng fabricationandperformanceoptimizationofsicbasedbetavoltaicbatteries AT wangxiaoyu fabricationandperformanceoptimizationofsicbasedbetavoltaicbatteries AT renlei fabricationandperformanceoptimizationofsicbasedbetavoltaicbatteries AT mengxiangdong fabricationandperformanceoptimizationofsicbasedbetavoltaicbatteries AT zhengmingjie fabricationandperformanceoptimizationofsicbasedbetavoltaicbatteries |