Morphology Evolution in High‐Performance Polymer Solar Cells Processed from Nonhalogenated Solvent
نویسندگان
چکیده
A new processing protocol based on non-halogenated solvent and additive is developed to produce polymer solar cells with power conversion efficiencies better than those processed from commonly used halogenated solvent-additive pair. Morphology studies show that good performance correlates with a finely distributed nanomorphology with a well-defined polymer fibril network structure, which leads to balanced charge transport in device operation.
منابع مشابه
Effect of Seed Layer on the Morphology of Zinc Oxide Nanorods as an Electron Transport Layer in Polymer Solar Cells
Zinc oxide has been considered as a promising semiconductor material for fabrication of transparent conductive oxides (TCOs), electronic devices, optoelectronics, and solar cells. Among the various morphologies of zinc oxide, nanorods are more widely used because of the ease of synthesis and providing a direct path for the transport of charge carriers. The electrochemical deposi...
متن کاملProcessing Solvent Dependent Morphology of Diketopyrrolopyr - role ( DPP ) based Low Band Gap Polymer and PCBM
Submitted for the MAR13 Meeting of The American Physical Society Processing Solvent Dependent Morphology of Diketopyrrolopyrrole (DPP) based Low Band Gap Polymer and PCBM Blends SUNZIDA FERDOUS, FENG LIU, THOMAS RUSSELL, Polymer Science and Engineering, University of Massachusetts-Amherst — Solution processing of polymer semiconductors is widely used for fabrication of low cost organic solar ce...
متن کاملControlling the morphology of nanocrystal-polymer composites for solar cells
We have shown recently that the use of high aspect ratio inorganic nanorods in conjunction with conjugated polymers is a route to obtaining efficient solar cells processed from solution. Here, we demonstrate that the use of binary solvent mixtures in which one of the components is a ligand for the nanocrystals is effective in controlling the dispersion of nanocrystals in a polymer. By varying t...
متن کاملHigh Efficiencies in Nanoscale Poly(3-Hexylthiophene)/Fullerene Solar Cells
A modified morphology was introduced for poly(3-hexylthiophene):phenyl-C71-butyric acid methyl ester (P3HT:PC71BM) bulk heterojunction (BHJ) solar cells by thermal and solvent annealing treatments in the presence of hydrophilic-hydrophobic block copolymers. Power conversion efficiency (PCE) plummet was prohibited during both thermal and solvent treatments for all BHJ devices modified wit...
متن کاملSequential Processing for Organic Photovoltaics: Design Rules for Morphology Control by Tailored SemiOrthogonal Solvent Blends
obtaining such effi ciencies has proven to be a major challenge due to the high sensitivity of device performance on the nm-scale morphology of the polymer and fullerene components. [ 10–17 ] To achieve the ideal nm-scale bulk heterojunction (BHJ) morphology for photovoltaic applications, two solution-based processing methods can be used: blend casting (BC) [ 18,19 ] and sequential processing (...
متن کامل