ORGANIC PHOTOVOLTAIC ARRAY AND METHOD OF MANUFACTURE

摘要

The fabrication and characterization of large scale inverted organic solar array fabricated using all-spray process is disclosed, consisting of four layers; ITO-Cs2CO3-(P3HT:PCBM)-modified PEDPT:PSS, on a substrate. With PEDPT:PSS as the anode, the encapsulated solar array shows more than 30% transmission in the visible to near IR range. Optimization by thermal annealing was performed based on single-cell or multiple-cell arrays. Solar illumination has been demonstrated to improve solar array efficiency up to 250% with device efficiency of 1.80% under AM1.5 irradiance. The performance enhancement under illumination occurs only with sprayed devices, indicating device enhancement under sunlight, which is beneficial for solar energy applications. The semi-transparent property of the solar module allows for applications on windows and windshields, indoor applications, and soft fabric substances such as tents, military back-packs or combat uniforms, providing a highly portable renewable power supply for deployed military forces.

主权项

1. An organic solar photovoltaic cell, manufactured comprising the steps:
obtaining an indium tin oxide substrate; spraying a layer of Cs2CO3 onto the etched indium tin oxide substrate; annealing the a layer of Cs2CO3 inside a glovebox; spraying an active layer of poly(3-hexylthiophene and 6,6-phenyl C61 butyric acid methyl ester on the layer of Cs2CO3;
wherein the active layer of poly(3-hexylthiophene and 6,6-phenyl C61 butyric acid methyl ester has a final layer thickness of about 200 nm to about 300 nm; drying the device in an antechamber under vacuum for at least 12 hours; spraying a layer comprising poly(3,4)ethylenedioxythiophene:poly-styrenesulfonate mixed with 5 vol. % of dimethylsulfoxide on the active layer; placing the organic solar photovoltaic cell into high vacuum for 1 h; annealing the solar photovoltaic cell, wherein the annealing is performed at 120° C., the annealing is performed at 160° C., or the annealing is performed at 120° C. for 10 minutes followed by high vacuum for 1 hour and annealing at 160° C. for 10 minutes; and encapsulating the organic solar photovoltaic cell with a UV-cured epoxy.