" In late 2004, Qynergy technical team achieved electrical power output with the highest beta energy isotope ever used in betavoltaic demonstrations. Using their proprietary device design and a high energy beta- isotope, the team measured electrical current and voltage that very closely matched their models. Betavoltaic power generation is similar to solar or photovoltaic power generation, but uses radioisotopes instead of the sunlight as the energy source. Beta isotopes are well suited for energy cells because they are easier to shield and contain than alpha or gamma radiation. The amount of power that can be generated is determined by the energy of the isotopes used."
