Polymer solar cell incorporating PEDOT:PSS films and MEH-PPV nanopillars

Poly[2-methoxy-5-(2-ethylhexyloxy)-1.4-phenylenevinylene] (MEH-PPV) is an attractive polymer for organic solar cells which were fabricated with spin coating technique using capillary force through the pores in to the channels of the alumina templates on the Glass/ITO substrates. The nanopillars were studied using UV-Vis absorption spectroscopy and found an enhanced absorption as compared to same thickness of MEH-PPV films. Organic solar cells will be fabricated with structures as Glass/ITO/ TiO₂/PEDOT:PSS/ MEH-PPV nanopillars/Al, where MEH-PPV acts as an electron donor and TiO₂ semiconductor material is used as an acceptor in polymer solar cell. PEDOT:PSS can improve performance by enhancement of hole collection, exciton diffusion and photocarrier transport. Surface morphology of the nanopillars in solar cell will be studied using Scanning Electron Microscopy, and various other characterization techniques such as UV-Vis spectroscopy, PL spectroscopy, energy dispersive X-ray spectroscopy and atomic force microscopy will be used. The performance of the solar cells will be determined by I-V characterization. Optimization of the dimensions of the nanopillars and thickness of the film will be done to obtain maximum efficiency of the devices.