Directional Crystallization from the Melt of an Organic p-Type and n-Type Semiconductor Blend
| Autor: | Yves Geerts, Andrew S. Dunn, Jie Liu, Mamatimin Abbas, Roland Resel, Guillaume Wantz, Guangfeng Liu, Peter Nadazdy, Peter Siffalovic |
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| Přispěvatelé: | Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
Physique de l'état condense [struct. électronique
etc.] Materials science crystallization thermotropic doping 02 engineering and technology Physique de l'état condense [struct. propr. thermiques etc.] 010402 general chemistry 01 natural sciences law.invention p- and n-type molecular semiconductors law Chimie General Materials Science Crystallization Physique de l'état condense [supraconducteur] ComputingMilieux_MISCELLANEOUS Extrinsic semiconductor General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Crystallography TCNQ acceptor Métallurgie et mines [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology |
| Zdroj: | Crystal growth & design, 21 (9 Crystal Growth & Design Crystal Growth & Design, American Chemical Society, 2021, 21 (9), pp.5231-5239. ⟨10.1021/acs.cgd.1c00570⟩ |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/acs.cgd.1c00570 |
| Popis: | Directional crystallization from the melt has been used as a tool to grow parallel crystalline stripes of p- and n-type molecular semiconductors. To start, the phase behavior of 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT-C8): tetracyanoquinodimethane (TCNQ) blends (molar ratio from 20:1 to 1:1) has been investigated by variable-temperature X-ray diffraction, differential scanning calorimetry, and polarized optical microscopy. The partial charge transfer between the C8-BTBT-C8 donor and the TCNQ acceptor as a function of temperature has been studied. Blends of 10:1 and 20:1 have been selected for directional crystallization because they show similar thermotropic and phase behavior comparable to that of pure C8-BTBT-C8. Directional crystallization results suggest that moderate cooling rates (6 and 12 °C min-1) leads to a digitated growth mode that gives rise to parallel crystalline stripes of C8-BTBT-C8 and C8-BTBT-C8-TCNQ charge-transfer complexes (C8-BTBT-C8-TCNQ CT), as confirmed by confocal Raman imaging. X-ray diffraction reveals high preferential orientation and good in-plane alignment for both C8-BTBT-C8 and C8-BTBT-C8-TCNQ CT crystallites. SCOPUS: ar.j info:eu-repo/semantics/published |
| Databáze: | OpenAIRE |
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