The specific energy density from radioactive decay is five to six orders of magnitude greater than the specific energy density
in conventional chemical battery and fuel cell technologies. We are currently investigating the use of liquid semiconductor
based betavoltaics as a way to directly convert the energy of radioactive decay into electrical power and potentially avoid
the radiation damage that occurs in solid state semiconductor devices due to non-ionizing energy loss. Sulfur-35 was selected
as the isotope for the liquid semiconductor demonstrations because it can be produced in high specific activity and is chemically
compatible with known liquid semiconductor media.