一种基于MEMS的同位素微电池的新型结构设计与仿真

针对传统同位素微电池的倒三角直槽型或倒金字塔型能量转换结构表面积较小和工作状态不稳定的缺陷.设计了一种垂直侧壁方孔阵列型的能量转换结构,增大了其表面积;并引入电镀这一新型的接触方式,改善了同类传统微电池的工作稳定性.建立了同位素微电池的电流计算公式.基于这种新结构对电池性能仿真得到了能量转换结构的最佳掺杂浓度,结果表明该结构与传统的能量转换结构相比,具有较低的掺杂浓度,较高的开路电压,输出电流和输出功率.

Design and Simulation of a Novel Radioisotope Micro Battery Based on MEMS

A new direct conversion device of vertical wall array for Radioisotope Micro Battery (RMB) is designed to enlarge the surface area. A novel electro plating section is introduced also to enhance the working reliability. Equations of current for RMB are founded. The performance simulation is utilized to the optimal doping concentrations. The results demonstrate that this direct conversion device has lower doping concentration, better performance than traditional channels array and inverted pyramid array devices.