High Voltage Gallium Phosphide Power Converters for Betavoltaic Batteries

用于 Betavoltaic 电池的高压磷化镓电源转换器

• 批准号: 9261713
• 负责人: Paul Sims
• 金额: $ 5万
• 依托单位: AstroPower, Incorporated
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-05-01 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9261713&HistoricalAwards=false
• 关键词: Voltage; Gallium; Phosphide; Power; Converters

AstroPower proposes to develop gallium phosphide energy converters optimized for radio luminescent light based power supplies. A "two-step" or "indirect" process is used where a phosphor is excited by radioactive decay products to produce light that is then converted to electricity by a GaP energy converter. This "indirect" energy conversion of B-radiation to electrical energy can be realized by applying recent developments in tritium based radio luminescent (RL) light sources in combination with the high cell operating voltage than can be achieved under low illumination with gallium phosphide photodiodes. This proposal addresses the development of semiconductor power converters that are suitable for low activity radioisotope fuels such as tritium (T2). Tritium has been neglected in semiconductor conversion due to its low average energy emission, 5.7 keV, but recent materials advances have advances have made tritium sources practical sources practical. Tritium has a relatively long half life, a safe decay product, is easily shielded, and is required in only small amounts for milliwatt power supplies.

AstroPower建议开发磷化镓能源 为基于无线电发光的功率优化的转换器 用品. 使用“两步”或“间接”方法，其中 磷光体被放射性衰变产物激发， 然后通过GaP能量转换为电能的光 转换器. 这种“间接”的能量转换的B-辐射， 电能可以通过应用最近的发展来实现 在基于氚的放射性发光（RL）光源中， 与高的电池工作电压相结合， 在低照度下用磷化镓 光电二极管 该提案涉及发展 适用于低活性的半导体功率转换器 放射性同位素燃料，如氚（T2）。 氚一直是 在半导体转换中由于其低平均值而被忽略 能量发射，5.7千电子伏，但最近的材料进步， 进展已经使氚源成为实际的来源。 氚具有相对较长的半衰期，是一种安全的衰变产物， 容易屏蔽，并且仅需要少量用于 毫瓦电源。