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Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. The structure of a typical monolithic quasi-solid-state dye-sensitized solar cell (DSSC) based on mesoscopic carbon-counter electrode (CCE). Figure Legend: From: Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes J. Nanophoton. 2013;7(1):073090-073090. doi:10.1117/1.JNP.7.073090
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Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. The scanning electron microscopy (SEM) images of the cross-section of a monolithic DSSC (a), normal carbon-counter electrode (NC-CE) layer (c), and graphene-modified mesoscopic carbon-counter electrode (GC-CE) layer (d), and the digital image of electrodes of 4×5 devices fabricated on a single F-doped tin oxide (FTO) glass substrate (b). The red circles indicate the graphene sheets on graphite flakes. Figure Legend: From: Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes J. Nanophoton. 2013;7(1):073090-073090. doi:10.1117/1.JNP.7.073090
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Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. Sheet resistance of the mesoscopic GC-CE layer changes with the thickness. Figure Legend: From: Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes J. Nanophoton. 2013;7(1):073090-073090. doi:10.1117/1.JNP.7.073090
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Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. Cyclic voltammogram of NC-CE and GC-CE at a scan rate of 50 mV s−1. Figure Legend: From: Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes J. Nanophoton. 2013;7(1):073090-073090. doi:10.1117/1.JNP.7.073090
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Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. Photocurrent density–voltage curves of devices based on NC-CE and GC-CE under AM 1.5 and 100 mW cm−2 illumination. Figure Legend: From: Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes J. Nanophoton. 2013;7(1):073090-073090. doi:10.1117/1.JNP.7.073090
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Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. Impedance spectra of symmetric cells with NC-CE and GC-CE under 0 V bias voltage. The inset shows the equivalent circuit model. Rs: series resistance; Rct: charge transfer resistance; Nbulk: Nernst diffusion impedance; CPE: constant phase element; and Npore: Nernst diffusion impedance within electrode pores. Figure Legend: From: Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes J. Nanophoton. 2013;7(1):073090-073090. doi:10.1117/1.JNP.7.073090
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Date of download: 6/23/2016 Copyright © 2016 SPIE. All rights reserved. Distribution of photovoltaic performance parameters for eight devices fabricated using the electrodes from the same substrate. Figure Legend: From: Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes J. Nanophoton. 2013;7(1):073090-073090. doi:10.1117/1.JNP.7.073090
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