C-14 powered dye-sensitized betavoltaic cells.

A dye sensitized betavoltaic cell is developed for the first time, which utilizes radioisotopic carbon, composed of nano-sized quantum dots, and ruthenium-based dye sensitized TiO2 as electrodes. In this cell, emitted beta radiations are absorbed by dye rather than TiO2, which resulted in enhanced performance compared to pristine betavoltaic cell