NOVELTY - The device (100) has a first scintillator material including radioactive material, where radiation (120) emitted from the radioactive material is converted into light emitted by the first scintillator material. An exterior portion of the first scintillator material is free of the radioactive material. An energy conversion device (140) is coupled to the first scintillator material, and converts light to electrical power. Reflective surfaces are constructed and arranged to internally reflect the light emitted from the first scintillator material back into the first scintillator material.    USE - Scintillator device. Uses include but are not limited to power sources, implantable medical devices, power supplies for remote long term monitoring and trickle chargers for consumer applications.    ADVANTAGE - The device modifies scintillator fabrication process to reduce risk of radioactive contamination of equipment and/or environment or to reduce quantity of contaminated waste generated by process. The device develops processes which minimize transfer of material from a container to another to avoid risk of contamination of the environment during transfer and to reduce number of contaminated vessels that are arranged after process. The device easily implements fabrication of currently disclosed materials to offer flexible and easy control with regards to desired radiation activity, ensures complete and uniform mixing of radioactive and non-radioactive components. The device ensures that currently disclosed fabrication processes are performed in a single vessel, thus increasing safety to an operator and minimizing cost of production.    DETAILED DESCRIPTION - The energy conversion device is one of a solar cell, a photodiode and a photoconductor. The scintillator material comprises one of strontium iodide and thallium doped cesium iodide. An INDEPENDENT CLAIM is also included for a method for fabricating a scintillator.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a scintillator incorporating a radioactive isotope coupled to an energy conversion device.    Scintillator device (100)    Radioactive sources (110)    Radiation (120)    Energy conversion device (140)    Interface (150)