Variety of Ordered Patterns in Donor–Acceptor Polymer Semiconductor Films Crystallized from Solution
| Autor: | Youngtea Chun, Xin Chang, Daping Chu, Pawan Kumar Shrestha, Jin Li, Shunpu Li, Mike Pivnenko |
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| Přispěvatelé: | Chun, Youngtea [0000-0002-4691-476X], Chang, Xin [0000-0001-6408-765X], Chu, Daping [0000-0001-9989-6238], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
0303 health sciences Materials science Morphology (linguistics) crystallization Transistor Nucleation Pattern formation 02 engineering and technology Polymer 021001 nanoscience & nanotechnology law.invention donor−acceptor polymer semiconductor 03 medical and health sciences variety of ordered pattern chemistry Chemical engineering law General Materials Science Crystallite Crystallization 0210 nano-technology 030304 developmental biology Line (formation) Research Article |
| Zdroj: | ACS Applied Materials & Interfaces |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | A huge challenge is to control the nucleation of crystallites/aggregates in the solution during polymer film formation to generate desired structures. In this work, we investigate crystallization of P(NDI2OD-T2), a donor-acceptor polymer semiconductor, with controlled solution flow along the contact line between the drying film and solution through a seesaw-like pivoting of samples during polymer drying. By controlling the pivoting frequency/amplitude, various types of line patterns can be observed: (I) an array of fishbone-like stripes oriented in the film-growth direction; (II) the pinning-depinning of contact line (PDCL)-mechanism-defined patterned wires along the contact line; and (III) periodic twined crystalline line pattern oriented in the direction of the contact line. The rich variety of pattern formation observed is attributed to the distinctiveness of the donor-acceptor conjugated polymer structure. The result measured from thin-film transistors made of the generated films/structures showed that the charge mobility of P(NDI2OD-T2) does not change much with the film morphology, which supports recent controversy over the charge-transportation mechanism of some donor-acceptor polymer semiconductors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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