title: Porphyrin-incorporated 2D D-A polymers with over 8.5% polymer solar cell efficiency.
abstract: A copolymerization strategy is developed to utilize porphyrin as a complementary light-harvesting unit (LHU) in D-A polymers. For polymer solar cells (PSCs), the presence of LHUs increases the short-circuit current density (Jsc ) without sacrificing the open-circuit voltage (Voc ) and fill factor (FF). Up to 8.0% power conversion efficiency (PCE) is delivered by PPor-2:PC71 BM single-junction PSCs. A PCE of 8.6% is achieved when a C-PCBSD cathodic interlayer is introduced.
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, 30010, Taiwan; Department of Applied Chemistry, National Chi Nan University, 302 University Road, Puli, Nantou, 54561, Taiwan.
authors.forename: Yi-Hsiang
authors.initials: YH
authors.lastname: Chao
authors.forename: Jyun-Fong
authors.initials: JF
authors.lastname: Jheng
authors.forename: Jhong-Sian
authors.initials: JS
authors.lastname: Wu
authors.forename: Kuan-Yi
authors.initials: KY
authors.lastname: Wu
authors.forename: Hsih-Hao
authors.initials: HH
authors.lastname: Peng
authors.forename: Ming-Chi
authors.initials: MC
authors.lastname: Tsai
authors.forename: Chin-Li
authors.initials: CL
authors.lastname: Wang
authors.forename: Yen-Ni
authors.initials: YN
authors.lastname: Hsiao
authors.forename: Chien-Lung
authors.initials: CL
authors.lastname: Wang
authors.forename: Ching-Yao
authors.initials: CY
authors.lastname: Lin
authors.forename: Chain-Shu
authors.initials: CS
authors.lastname: Hsu
keywords: bulk-heterojunction organic photovoltaics; conjugated polymers; fullerenes; organic electronics; porphyrin