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Issue 17, 2017, Issue in Progress
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A thiocarbonyl-containing small molecule for optoelectronics

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Abstract

We report the synthesis and characterization of a novel thiocarbonyl iso-DPP derivative, namely 1,3,4,6-tetraphenylpyrrolo[3,2-b]pyrrole-2,5(1H,4H)-dithione. Even without solubilising alkyl chains, the small molecule could be processed from organic solvents such as dichloromethane, chloroform or dichlorobenzene, and it was found that the optical properties of neat thin films were strongly dependent on the solvent used. Field effect hole mobilities were of the order 10−4 cm2 V−1 s−1, with mobilities measured in a diode configuration solvent dependent and at least an order of magnitude lower. Importantly, blends of the iso-DPP derivative with PC70BM, a typically used electron acceptor in bulk heterojunction solar cells, were found to possess hole mobilities of up to 10−3 cm2 V−1 s−1 in a diode configuration, which was an order of magnitude larger than the electron mobility. Finally, simple bulk heterojunction solar cells were fabricated with maximum power conversion efficiencies of 2.3%.

Graphical abstract: A thiocarbonyl-containing small molecule for optoelectronics

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Publication details

The article was received on 16 Jan 2017, accepted on 31 Jan 2017 and first published on 07 Feb 2017


Article type: Paper
DOI: 10.1039/C7RA00693D
Citation: RSC Adv., 2017,7, 10316-10322
  • Open access: Creative Commons BY-NC license
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    A thiocarbonyl-containing small molecule for optoelectronics

    D. Gendron, F. Maasoumi, A. Armin, K. Pattison, P. L. Burn, P. Meredith, E. B. Namdas and B. J. Powell, RSC Adv., 2017, 7, 10316
    DOI: 10.1039/C7RA00693D

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