ELECTRON DONATING POLYMER AND ORGANIC SOLAR CELL INCLUDING THE SAME

摘要

PURPOSE: An electron donating polymer is provided to absorb the light of wide wavelength area and to improve optical absorption rate of an organic solar cell, a short circuit current density, an open circuit voltage and a hole mobility. CONSTITUTION: An electron donating polymer comprises a repeating unit A. The repeating unit A comprises a repeating unit in the chemical formula 1, and at least one repeating unit among the repeating units in the chemical formula 2-4 with the molar ratio of 1:1 - 1:1.4. An organic solar cell including the same comprises an anode and a cathode facing each other, a photo active layer, which includes electron donors and electron acceptors, between the anode and cathode. The electron donor comprises the electron donating polymer.