title: Toward the Realization of a practical diketopyrrolopyrrole-based small molecule for improved efficiency in ternary BHJ solar cells.
abstract: An easily accessible DPP-based small molecule (DMPA-DTDPP) has been synthesized by a simple and efficient route. The resulting molecule, when incorporated into a P3HT:PCBM-based BHJ solar cell, is found to significantly improve the efficiency. The utility of DMPA-DTDPP as an additive yields an increase in the short circuit current density (Jsc) because DMPA-DTDPP serves as an energy funnel for P3HT excitons at the P3HT:PCBM interfaces, resulting in an improved overall power conversion efficiency, compared to the P3HT:PCBM control device. Considering the trouble-free and cost effective synthesis of DMPA-DTDPP, it may prove very useful in high-performance solar cells.
authors.affiliation: Interdisciplinary School of Green Energy and KIER-UNIST, Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea.
authors.forename: Junghoon
authors.initials: J
authors.lastname: Lee
authors.affiliation: Interdisciplinary School of Green Energy and KIER-UNIST, Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea.
authors.forename: Myoung Hee
authors.initials: MH
authors.lastname: Yun
authors.affiliation: Interdisciplinary School of Green Energy and KIER-UNIST, Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea.
authors.forename: Jonggi
authors.initials: J
authors.lastname: Kim
authors.affiliation: Interdisciplinary School of Green Energy and KIER-UNIST, Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea.
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim
authors.affiliation: Interdisciplinary School of Green Energy and KIER-UNIST, Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea.. yang@unist.ac.kr.
authors.forename: Changduk
authors.initials: C
authors.lastname: Yang
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D007659:Ketones / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D012993:Solar Energy
chemical_list: D000814:Aniline Compounds; D007659:Ketones; D011758:Pyrroles; C000604894:diketopyrrolopyrrole dye; C050795:N,N-dimethyl-4-anisidine