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Panchromatic absorption of dye sensitized solar cells by co-Sensitization of triple organic dyes

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Abstract

Dye sensitized solar cells (DSSCs) were co-sensitized with three custom molecularly engineered organic dyes containing butyloxyl chain induced dye (Y1), boron dipyrromethene (bodipy) dye (TP2A), and squaraine (SQ) ring configured dye (HSQ4). The individual power conversion efficiencies of the DSSCs sensitized with Y1, TP2A and HSQ4 sensitizers were 3.44%, 4.26% and 5.78%, respectively. Co-sensitized TP2A + HSQ4 dyes at a 2 : 1 molar ratio showed an efficiency of 7.02%. Further addition of Y1 dye with optimal TP2A + HSQ4 increased the VOC from 0.580 V to 0.605 V. The co-sensitized Y1 + TP2A + HSQ4 based DSSCs showed a new optimal efficiency (η) of 7.48%. This is the highest efficiency recorded for DSSCs based on co-sensitization of triple organic dyes. Intensity modulated photovoltage spectroscopy further confirms the longer lifetime of co-sensitized Y1 + TP2A + HSQ4 compared to that of each individual TP2A and HSQ4 and co-sensitized TP2A + HSQ4 dye.

Graphical abstract: Panchromatic absorption of dye sensitized solar cells by co-Sensitization of triple organic dyes

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Publication details

The article was received on 28 Jul 2017, accepted on 16 Oct 2017 and first published on 18 Oct 2017


Article type: Paper
DOI: 10.1039/C7SE00362E
Citation: Sustainable Energy Fuels, 2017, Advance Article
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    Panchromatic absorption of dye sensitized solar cells by co-Sensitization of triple organic dyes

    A. Islam, T. H. Chowdhury, C. Qin, L. Han, J. Lee, Idriss M. Bedja, M. Akhtaruzzaman, K. Sopian, A. Mirloup and N. Leclerc, Sustainable Energy Fuels, 2017, Advance Article , DOI: 10.1039/C7SE00362E

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