Ternary Solvent System to Control the Morphology of Active Blend in Inverted Organic Solar Cells. Issue 9 (13th June 2017)

• Record Type: Journal Article
• Authors: Nair, Sarita S.; Kumar, D.
• Is Part Of: Polymer-plastics technology and engineering. Volume 56:Issue 9(2017)
• Page Start: 974
• Page End: 982
• Publication Date: 2017-06-13
• Subjects: Aggregation -- chain structures -- charge transfer -- P3HT–PCBM -- solvent effects; Polymers -- Periodicals; Polymerization -- Periodicals; Polymers -- Periodicals; Engineering -- Periodicals; Plastics -- Periodicals; 668.9
• DOI: 10.1080/03602559.2016.1247278
• Languages: English
• ISSNs: 0360-2559

Abstract

ABSTRACT: Bulk heterojunction blend of poly(3-hexylthiophene)–[6, 6]-phenyl-C61 -butyric acid methyl ester prepared using the ternary solvent mixture was used as the active layer of an inverted organic solar cell. The ternary solvent mixture consisted of a good solvent such as ortho -dichlorobenzene and two marginal solvents such as cyclohexanone and toluene offering limited solubility to the poly(3-hexylthiophene) component. Power conversion efficiency of inverted device was found to decrease from 2.74 ± 0.05% in the unmodified device to 2.64 ± 0.07% in the modified device. UV–visible measurement revealed less efficient photoabsorption in the mixed cosolvent-casted active layer due to insufficient and disordered crystallization of poly(3-hexylthiophene) domains. GRAPHICAL ABSTRACT: