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Proceedings Paper

Solution-processable perylene diimide based star-shaped small molecule acceptor: synthesis and photovoltaic properties
Author(s): Xin Zhang; Bo Jiang; Shaoqing Zhang; Jianhui Hou; Jiannian Yao; Chuanlang Zhan
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Paper Abstract

Previously we have reported a series of perylene dimide (PDI) dimers as efficient solution-processible small molecule acceptors. In this paper we present a new solution-processible PDI trimer with triphenylamine as the romatic bridge. This trimer was synthesized by Suzuki coupling reaction and fully characterized with 1H-NMR, 13C-NMR, TOF-MS, and elementary analysis. It exhibits a broad absorption band in the wavelength range from 450 to 650 nm with a peak round 533 nm and a maximum extinction coefficient of 9.61 × 104 M-1 cm-1. Its lowest unoccupied and highest occupied molecular orbit (LUMO and HOMO) energies are −3.75 and −5.60 eV. When blend with the commercial P3HT, it gives an open-circuit voltage (Voc) of 0.73 V, a short-circuit current-density (Jsc) of 0.60 mA/cm2, a fill-factor (FF) of 51.0% and an efficiency of 0.22%. When utilizing the conjugated polymer of PBDTTT-C-T as the donor and 5% DIO as the additive, the best conventional cell yields 1.82% efficiency with a Voc of 0.99 V, a Jsc of 3.44 mA/cm2, and an FF of 53.0%.

Paper Details

Date Published: 6 October 2014
PDF: 11 pages
Proc. SPIE 9184, Organic Photovoltaics XV, 91840C (6 October 2014); doi: 10.1117/12.2058421
Show Author Affiliations
Xin Zhang, Institute of Chemistry (China)
Bo Jiang, Institute of Chemistry (China)
Shaoqing Zhang, Institute of Chemistry (China)
Jianhui Hou, Institute of Chemistry (China)
Jiannian Yao, Institute of Chemistry (China)
Chuanlang Zhan, Institute of Chemistry (China)


Published in SPIE Proceedings Vol. 9184:
Organic Photovoltaics XV
Zakya H. Kafafi; Paul A. Lane; Ifor D. W. Samuel, Editor(s)

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