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    Inkjet-printed platinum counter electrodes for dye-sensitized solar cells

    Year: 2017

    Journal: Org. Electron., Volume 44, MAY, page 159–167

    Authors: Ozkan, Merve; Hashmi, Syed Ghufran; Halme, Janne; Karakoc, Alp; Sarikka, Teemu; Paltakari, Jouni; Lund, Peter D.

    Organizations: Environomical Pathways for Sustainable Energy Services (SELECT+) doctoral programme; Academy of Finland [287641]; Tekniikan edistamissaatio TES through Foundations' Post Doc Pool, Finland

    Keywords: Dye-sensitized solar cells; Inkjet printing; Platinum; Catalyst; Stability

    In this study, inkjet printing method was successfully demonstrated to produce catalytic platinum layers for dye-sensitized solar cells. Our work includes meticulous optical, morphological, and electrocatalytical analyses of precisely inkjet-patterned counter electrodes as well as traditionally drop-cast samples. Similar catalytic performance was obtained with both methods (R'(CT) = 1.2 ohm cm(2) for drop-cast and R'CT = 1.6 ohm cm2 for inkjet-printed) at same Pt loading (ca. 2.5 mu g/cm(2)), and correspondingly almost same cell efficiencies (eta(drop-cast) = 6.5% and eta(printed) = 6.7%). All the cells exhibited high stability by keeping their efficiencies after being subjected to a 1000 h aging test under 1 Sun and 35 degrees C at the open circuit condition. These results highlight the potential of inkjet printing to realize precisely patterned and nomaterial-wasting counter electrodes by controlled dispensing of the functional solution. (C) 2017 Elsevier B. V. All rights reserved.
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