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| Hauptseite > Publikationsdatenbank > Investigation of Hierarchical Structure Formation in Merocyanine Photovoltaics > print |
| Hauptseite > Publikationsdatenbank > Investigation of Hierarchical Structure Formation in Merocyanine Photovoltaics > print |
| 001 | 884119 | ||
| 005 | 20210401192805.0 | ||
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| 100 | 1 | _ | |a Murrey, Tucker L. |0 0000-0002-5947-2892 |b 0 |
| 245 | _ | _ | |a Investigation of Hierarchical Structure Formation in Merocyanine Photovoltaics |
| 260 | _ | _ | |a Washington, DC |c 2020 |b Soc. |
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| 520 | _ | _ | |a Merocyanines (MCs) are a versatile class of small-molecule dyes. Their optoelectronic properties are easily tunable by chemically controlling their donor–acceptor strength, and their structural properties can be tuned by simple side-chain substitution. This manuscript demonstrates a novel series of MCs featuring an indoline donor with varying hydrocarbon side-chain length (from 6 to 12 carbons) and a tert-butyl-thiazole acceptor, labeled InTBT. Bulk heterojunction organic photovoltaics are fabricated with a [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) acceptor and characterized. Films composed of I8TBT:PCBM and I9TBT:PCBM produced the highest power conversion efficiency of 4.5%, which suggests that the morphology is optimized by controlling the side-chain length. Hierarchical structure formation in InTBT:PCBM films is studied using grazing incidence X-ray diffraction (GIXRD), small-angle neutron scattering (SANS), and atomic force microscopy (AFM). When mixed with PCBM, InTBTs with ≤8 side-chain carbons form pure crystalline domains, while InTBTs with ≥9 side-chain carbons mix well with PCBM. SANS demonstrates that increasing side-chain length increases the InTBT-rich domain size. In addition, a branched hexyl–dodecyl side-chain IHDTBT:PCBM film was studied and found to exhibit the worst-performance organic photovoltaic (OPV) device. The large-branched side chain inhibited mixing between IHDTBT and PCBM resulting in large segregated phases. |
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| 700 | 1 | _ | |a Moulé, Adam J. |0 0000-0003-1354-3517 |b 10 |e Corresponding author |
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| 773 | _ | _ | |a 10.1021/acs.jpcc.0c04988 |g Vol. 124, no. 36, p. 19457 - 19466 |0 PERI:(DE-600)2256522-X |n 36 |p 19457 - 19466 |t The journal of physical chemistry |v 124 |y 2020 |x 1932-7455 |
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