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Surface Treatment Effect of Carbon Fiber Fabric Counter Electrode in Dye Sensitized Solar Cell

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Abstract:

Dye sensitized solar cells (DSSC) with surface modified carbon fiber fabric (CF) counter electrodes were prepared and tested. Four different type of CF were used; carbon fiber (CF); carbon fiber etched with NaOH (ECF); carbon fiber with thermally deposited platinum (CFPt); and carbon fiber etched with NaOH followed by thermal deposition of platinum (ECFPt). For comparison, DSSC with thermally Pt deposited fluorine doped tin oxide (FTO/Pt) glass counter electrode was also prepared and tested. Scanning electron microscope (SEM) proved that surface morphology of the carbon fiber was roughened by the etching process and platinum deposition process. The I–V curves of each DSSC were measured under simulated light (1 Sun, AM 1.5) to get open circuit voltage (V oc), short circuit current density (J sc), fill factor (FF) and efficiency (η). Electrochemical impedance spectroscopy of each cell was measured also. It was found that higher efficiency is obtained in order of using ECFPt > CFPt > FTO/Pt > ECF > CF counter electrode.

Keywords: CARBON FIBER; COUNTER ELECTRODE; DYE SENSITIZED SOLAR CELL; ETCHING; PT DEPOSITION

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2012.4630

Publication date: February 1, 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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