Academic Journal
Optimizing Alkyl Side Chains in Difluorobenzene–Rhodanine Small-Molecule Acceptors for Organic Solar Cells
| العنوان: | Optimizing Alkyl Side Chains in Difluorobenzene–Rhodanine Small-Molecule Acceptors for Organic Solar Cells |
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| المؤلفون: | Jongchan Choi, Chang Eun Song, Eunhee Lim |
| المصدر: | Materials, Vol 17, Iss 8, p 1875 (2024) |
| بيانات النشر: | MDPI AG |
| سنة النشر: | 2024 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | solar cells, photovoltaic, nonfullerene, acceptor, organic solar cell, rhodanine, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85 |
| الوصف: | A series of small molecules, T-2FB-T-ORH , T-2FB-T-BORH , and T-2FB-T-HDRH , were synthesized to have a thiophene-flanked difluorobenzene (T-2FB-T) core and alkyl-substituted rhodanine (RH) end groups for their use as nonfullerene acceptors (NFAs) in organic solar cells (OSCs). Octyl, 2-butyloctyl (BO), and 2-hexyldecyl (HD) alkyl side chains were introduced into RHs to control the material’s physical properties based on the length and size of the alkyl chains. The optical properties of the three NFAs were found to be almost the same, irrespective of the alkyl chain length, whereas the molecular crystallinity and material solubility significantly differed depending on the alkyl side chains. Owing to the sufficient solubility of T-2FB-T-HDRH , OSCs based on PTB7-Th and T-2FB-T-HDRH were fabricated. A power conversion efficiency of up to 4.49% was obtained by solvent vapor annealing (SVA). The AFM study revealed that improved charge mobility and a smooth and homogeneous film morphology without excessive aggregation could be obtained in the SVA-treated film. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1996-1944 |
| Relation: | https://www.mdpi.com/1996-1944/17/8/1875; https://doaj.org/toc/1996-1944; https://doaj.org/article/08ca81889e1e47bc85137ebada991b0a |
| DOI: | 10.3390/ma17081875 |
| الاتاحة: | https://doi.org/10.3390/ma17081875 https://doaj.org/article/08ca81889e1e47bc85137ebada991b0a |
| رقم الانضمام: | edsbas.E1396AC5 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 19961944 |
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| DOI: | 10.3390/ma17081875 |