ITIC-2F (n-type acceptor)
ITIC-2F shows a more red-shifted absorption than ITIC with an improved absorption coefficient, which can be ascribed to enhanced intramolecular charge transfer. For this reason, devices with ITIC-2F as acceptors can cover a broader absorption spectrum - which can potentially enhance the device PCEs.
ITIC-2F also has deeper HOMO/LUMO energy levels. This makes it a better match for most polymer semiconductor donors, and provides better stability for device fabrication and overall performance.
Efficiency of over 13% was achieved when ITIC-2F (IT-4F) was used as an acceptor with polymer PBDB-T-SF as the active-layer donor material with a inverted device structure: indium tin oxide (ITO)/ZnO/PBDB-T-SF:TI-4F (1:1)/MoO3/Al .
We also now have ITIC-DCl available as another NFA for highly efficient organic solar cells.
Characterisation (1H NMR)
|Purity||99% (1H NMR)|
|Synonyms||ITIC-F, IT-4F, ITIC-DF|
|HOMO / LUMO||HOMO = -5.66 eV, LUMO = -4.14 eV |
|Classification / Family||NFAs, Organic semiconducting materials, Low band-gap small molecule, Small molecular acceptor, Organic photovoltaics, Polymer solar cells, NF-PSCs.|
Literature and Reviews
- Molecular Optimization Enables over 13% Efficiency in Organic Solar Cells, W. Zhao at al., J. Am. Chem. Soc., 139 (21), 7148–7151 (2017); DOI: 10.1021/jacs.7b02677.
- Energy-Level Modulation of Small-Molecule Electron Acceptors to Achieve over 12% Efficiency in Polymer Solar Cells, S. Li et al, Adv. Mater., 28, 9423–9429 (2016); DOI: 10.1002/adma.201602776.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.