ITIC-DCl, ITIC-4Cl, IT-4Cl
ITIC-DCl, one of the out-performing ITIC family members, is always used as an acceptor material to replace fullerene acceptors in non-fullerene organic solar cells (NFA-OSCs) or non-fullerene polymer solar cells (NFA-PSCs). When compared with IT-4F (ITIC-2F), it exhibits lower HOMO/LUMO energy levels due to the partial larger dipole moment of the chloro-containing molecules.
Together with IT-2Cl as an acceptor material, a power conversion efficiency (PCE) of over 14% has been achieved using ITIC-DCl, with PBDB-T-F as a donor polymer material.
Devices architecture: ITO/PEDOT:PSS (35 nm)/PBDB-T-2F:IT-2Cl(20%):IT-4Cl(80%) (95-100 nm)/PFN-Br/Al (100 nm).
Characterisation (1H NMR)
|Purity||>99% (1H NMR)|
|Synonyms||IT-4Cl, ITIC-4Cl, ITIC-Cl|
|Molecular weight||1565.72 g/mol|
|HOMO / LUMO||HOMO = -5.75 eV, LUMO = -4.09 eV |
|Classification / Family||NFAs, Organic semiconducting materials, Low band-gap small molecule, Small molecular acceptor, Organic photovoltaics, Polymer solar cells, NF-PSCs, n-type acceptor|
Literature and Reviews
- Over 14% Efficiency in Organic Solar Cells Enabled by Chlorinated Nonfullerene Small-Molecule Acceptors, H. Zhang et al., Adv. Mater., 30, 1800613 (2018); DOI: 10.1002/adma.201800613.
- Fluorination vs. chlorination: a case study on high performance organic photovoltaic materials, Y. Zhang et al., Sci. China. Chem., 61 (10), 1328-1337 (2018); doi:10.1007/s11426-018-9260-2.
- Morphology Control Enables Efficient Ternary Organic Solar Cells, Y. Xie et al., Adv. Mater., 30, 1803045 (2018); DOI: 10.1002/adma.201803045.
- Nonfullerene small-molecule acceptors with perpendicular side-chains for fullerene-free solar cells, F. Shen et al., Mater. Chem. A, 6, 15433 (2018); DOI: 10.1039/c8ta04718a.
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