Infrared radiation generated by high‐energy‐density radioisotope decay can be converted to electrical energy in radioisotope thermophotovoltaic (RTPV) generators. Thermal emission intensity and spectral properties have substantial implications in this thermal energy conversion process. To improve the performance of the RTPV generator, a silicone coating material is used as a thermal emission enhancer, and SiO₂ is used as a filter. The silicone coating has excellent thermal emissivity at high temperatures. The SiO₂ filter is used for optical modulation during the thermal energy conversion process. The heat transfer optimization problem caused by the internal temperature distribution of the system is discussed. Compared with the experimental model before optimization, the output power of the RTPV generator increased by 126% obtains an open‐circuit voltage of 2.64 V, an electric power of 89.88 mW, and an energy conversion efficiency of 5.62%. The RTPV generator is expected to be a potential candidate for energy supply in extreme environments.

中文翻译：

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热辐射增强型和光调制放射性同位素热光电发生器

高能密度放射性同位素衰变产生的红外辐射可以在放射性同位素热光电（RTPV）发生器中转换为电能。在这种热能转化过程中，热发射强度和光谱特性具有重要意义。为了提高RTPV发生器的性能，有机硅涂层材料被用作散热增强剂，而SiO ₂被用作过滤器。有机硅涂层在高温下具有出色的热发射率。SiO ₂滤波器用于热能转换过程中的光学调制。讨论了由系统内部温度分布引起的传热优化问题。与优化前的实验模型相比，RTPV发生器的输出功率提高了126％，获得2.64 V的开路电压，89.88 mW的电功率和5.62％的能量转换效率。RTPV发电机有望成为极端环境中能源供应的潜在候选者。