Patent ID: 8772629

Claim:
A photovoltaic apparatus comprising: an optical fiber core; a radiation transmissive first electrode surrounding the optical fiber core; at least one photosensitive organic layer surrounding the first electrode and electrically connected to the first electrode; and a second electrode fully enclosing the photosensitive organic layer and electrically connected to the photosensitive organic layer, wherein the organic layer comprises at least one upconverter material, anti-Stokes material, laser dye, anti-counterfeiting dye, quantum dot, or combination thereof, wherein (a) the second electrode is a continuous reflective metal layer having a thickness of about 100 nm to about 1 μm; or (b) the apparatus comprises a reflective and continuous external metal contact fully enclosing the second electrode; or (c) the second electrode is reflective and the apparatus comprises a reflective and continuous external metal contact fully enclosing the second electrode; and wherein the apparatus is operable to pass radiation into the photosensitive organic layer from the interior of the fiber core.