Synthesis of a BDT-based small-molecule acceptor with dye end groups for organic photovoltaic cell application. (12th August 2016)

• Record Type: Journal Article
• Authors: Lim, Eunhee
• Is Part Of: Molecular crystals and liquid crystals. Volume 635(2016)
• Page Start: 94
• Page End: 101
• Publication Date: 2016-08-12
• Subjects: Organic photovoltaic cells -- OPV -- benzo[1, 2-b:4, 5-b' ]dithiophene (BDT) -- 1, 3-indandione; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2016.1200368
• Languages: English
• ISSNs: 1542-1406

Abstract

ABSTRACT: An acceptor-donor-acceptor (A–D–A)-type small molecule, BDT-IN, having a benzo[1, 2- b :4, 5- b' ]dithiophene (BDT) unit as its electron-donating core (D) and an 1, 3-indanedione (IN) unit as its electron-withdrawing end group (A), was synthesized by Knoevenagel condensation. TheBDT-IN film showed broader UV absorption with a greater red shift (λmax = 622 nm) than that of theBDT-IN solution (λmax = 570 nm). The organic photovoltaic cells were fabricated with an ITO/PEDOT:PSS/poly(3-hexylthiophene):BDT-IN /LiF/Al configuration, and showed a power conversion efficiency of 0.23%.