The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Design of New Electron Acceptor Materials for Organic Photovoltaics: Synthesis, Electron Transport, Photophysics, and Photovoltaic Properties of Oligothiophene-Functionalized Naphthalene Diimides
Abstract
A homologous series of six novel oligothiophene–naphthalene diimide-based oligomer semiconductors with a donor–acceptor architecture, NDI- n TH ( n = 1, 2, 3, 4) and NDI- n T ( n = 2, 3), was synthesized and used to explore a set of criteria for the design of non-fullerene electron acceptor materials for organic solar cells. Thin films of the oligomer semiconductors had optical band gaps that varied from 2.1 eV in NDI-1TH and 1.6 eV in NDI-3TH to 1.4 eV in NDI-4TH, demonstrating good potential for light harvesting and exciton generation. The LUMO energy levels of the oligomer semiconductors were similar (ca. −4.0 eV), but the HOMO levels varied from −5.5 eV in NDI-3TH and NDI-4TH to −6.1 eV in NDI-1TH, showing that suitable energy band offsets necessary for efficient photoinduced charge transfer could be achieved with current donor polymers. Single-crystal X-ray structures of NDI-3TH and NDI-4TH showed a slipped face-to-face π-stacking with short intermolecular distances (0.321–0.326 nm), which enabled facile self-assembly of single-crystalline nanowires from solution. Spin coated thin films of NDI- n TH and NDI- n T were mostly crystalline and had field-effect electron mobilities of up to (2–9) × 10 –4 cm 2 /(V s). Bulk heterojunction solar cells incorporating one of the n-type oligomer semiconductors as the electron acceptor and poly(3-hexylthiophene) as the electron donor showed a power conversion efficiency of 1.5% with an open circuit voltage of 0.82 V and a bicontinuous nanoscale morphology.
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Cites
Conjugated Polymer-Based Organic Solar Cells
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Electron Transport Materials for Organic Light-Emitting Diodes
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7.7% Efficient All‐Polymer Solar Cells
Hwang, Y., Courtright, B. A. E., Ferreira, A. S., Tolbert, S. H., & Jenekhe, S. A. (2015) · Advanced Materials · doi:10.1002/adma.201501604 · Cited by 432
Self-citationEftaiha, A. F., Sun, J.-P., Hill, I. G., & Welch, G. C. (2014) · J. Mater. Chem. A · doi:10.1039/c3ta14236a · Cited by 379
Electronic and optoelectronic materials and devices inspired by nature
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Tailoring Porphyrin-Based Electron Accepting Materials for Organic Photovoltaics
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Metadata
- Authors
- Ahmed, E., Ren, G., Kim, F. S., Hollenbeck, E. C., & Jenekhe, S. A.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-09-30
- Volume
- 23
- Issue
- 20
- Pages
- 4563-4577
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2325805138
- Cited by
- 185
- References
- 2
- FWCI
- 17.16
- Type
- journal article
- Language
- en
- Open access
- closed
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