Manufacturing of Organic Photovoltaic Device

Patent Status: 

Patent Filed

Indian Patent Applicaton No: 

654/DEL/2011

Overview: 

Annealing of the active layer during its formation by the solvent drying step in the presence of electric field is able to enhance efficiency of the bulk-heterojunction based polymer solar cells.

Key Features: 

  • The active layer in polymer based organic solar cells are formed by wet processing where the solvent is removed by annealing after coating a solution of the active layer.
  • An application of an electric field during the solvent drying step significantly improves the performance of the subsequent solar cells fabricated with those layers.

Applications: 

  • Fabrication of higher efficiency polymer based solar cells.
  • No extra process time needed to incorporate this annealing step in regular bulk-heterojunction solar cell fabrication.
  • Negligible energy consumed in incorporating this inventive step during regular device process.

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