Impact of polymorphism on the optoelectronic properties of a low-bandgap semiconducting polymer
| Autor: | Yuanping Yi, MM Martijn Wienk, Stefan C. J. Meskers, Pieter J. Leenaers, René A. J. Janssen, Tomasz Marszalek, Frédéric Laquai, Mengmeng Li, Ahmed H. Balawi, Lu Ning, Wojciech Pisula, Gaël H. L. Heintges |
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| Přispěvatelé: | Molecular Materials and Nanosystems, Macromolecular and Organic Chemistry |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Electron mobility Materials science Photoluminescence Band gap Science General Physics and Astronomy 02 engineering and technology Conjugated polymers General Biochemistry Genetics and Molecular Biology Polymer solar cell Article 03 medical and health sciences Electrical resistivity and conductivity Electronic devices lcsh:Science Photocurrent chemistry.chemical_classification Multidisciplinary business.industry General Chemistry Polymer 021001 nanoscience & nanotechnology 030104 developmental biology Polymorphism (materials science) chemistry Optoelectronics lcsh:Q 0210 nano-technology business |
| Zdroj: | Nature Communications, Vol 10, Iss 1, Pp 1-11 (2019) Nature Communications Nature Communications, 10, 2867 Nature Communications, 10(1):2867. Nature Publishing Group |
| ISSN: | 2041-1723 |
| Popis: | Polymorphism of organic semiconducting materials exerts critical effects on their physical properties such as optical absorption, emission and electrical conductivity, and provides an excellent platform for investigating structure–property relations. It is, however, challenging to efficiently tune the polymorphism of conjugated polymers in aggregated, semi-crystalline phases due to their conformational freedom and anisotropic nature. Here, two distinctly different semi-crystalline polymorphs (β1 and β2) of a low-bandgap diketopyrrolopyrrole polymer are formed through controlling the solvent quality, as evidenced by spectroscopic, structural, thermal and charge transport studies. Compared to β1, the β2 polymorph exhibits a lower optical band gap, an enhanced photoluminescence, a reduced π-stacking distance, a higher hole mobility in field-effect transistors and improved photocurrent generation in polymer solar cells. The β1 and β2 polymorphs provide insights into the control of polymer self-organization for plastic electronics and hold potential for developing programmable ink formulations for next-generation electronic devices. Tuning polymorphism of conjugated polymers, though a promising method for studying and controlling the structure-property relations in these materials remains a challenge. Here, the authors identify two aggregated semi-crystalline polymorphs of a low-bandgap diketopyrrolopyrrole-based polymer. |
| Databáze: | OpenAIRE |
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