| 초록 |
Conventional batteries often lack sufficient electrical power and long-term durability for sustaining applications in extreme environments. In contrast, nuclear batteries may provide a solution for such applications through higher energy densities and extended life times. Herein, we report on a new betavoltaic device that employs a dye-sensitized betavoltaic cell, which utilizes radioisotopic carbon electrode composed of nano-sized quantum dots. In this cell configuration,emitted beta radiation is absorbed by a dye rather than by a semiconductor. Using a TiO2 nanoparticle layer sensitized with the ruthenium-based N719 dye, betavoltaic device was able to achieve an enhanced utilization of emitted electrons by 32,000 times and long-term stability for 10 hourrs maintanined compared to a normal betavoltaic cell. |
