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Concrete Embedded Dye Sensitized Solar Cell J. Alward ¹ , A. Torres¹

Dye. TiO 2. 2.2 eV. Electrolyte. Concrete Embedded Dye Sensitized Solar Cell J. Alward ¹ , A. Torres¹ T. Hosseini ¹ , I. Flores-Vivian ² , K. Sobolev ² , N. Kouklin ¹

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Concrete Embedded Dye Sensitized Solar Cell J. Alward ¹ , A. Torres¹

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  1. Dye TiO2 2.2 eV Electrolyte Concrete Embedded Dye Sensitized Solar Cell J. Alward¹, A. Torres¹ T. Hosseini¹, I. Flores-Vivian², K. Sobolev², N. Kouklin¹ 1- Department of Electrical Engineering, University of Wisconsin-Milwaukee; 2- Department of Civil Engineering, University of Wisconsin-Milwaukee Concrete Glass ITO Light 3.2 eV Ionic Recombination Current/Battery Effect METHODOLOGY • DSSC is produced using TiO2 nanoparticles conjugated with an organic dye • Conductivity is adjusted by dispersing carbon nano fibers into concrete • Conductance of concrete samples and DSSC efficiency are measured by carrying out the Current-Voltage characteristics of specimen as a function of fiber concentration • Tests are done under ambient conditions (T=300 K, RH%=40%) OBJECTIVES • To engineer and test concrete-embedded DSSC for on-site power generation and solar energy harvesting • To improve on the DSSC’s power conversion efficiency by reducing parasitic series resistance of concrete device region • To probe physical mechanism underlying charge-carrier transport in concrete-carbon fiber matrix Image courtesy of: Hosseini, T., Flores-Vivian, I., Sobolev, K. & Kouklin, N. Concrete Embedded Dye-Synthesized Photovoltaic Solar Cell. Sci. Rep. 3, 2727; DOI:10.1038/srep02727 (2013).

  2. Concrete Embedded Dye Sensitized Solar Cell J. Alward¹, A. Torres¹ T. Hosseini¹, I. Flores-Vivian², K. Sobolev², N. Kouklin¹ 1- Department of Electrical Engineering, University of Wisconsin-Milwaukee; 2- Department of Civil Engineering, University of Wisconsin-Milwaukee CARBON NANOFIBER/CONCRETE RESULTS • Transconductance of concrete scales with CNF concentration with I-Vs remaining Ohmic-like • Nonlinear dependence of conductivity on CNF concentration is observed, with conductivity showing saturation at high CNF load • DSSC is confirmed to generate power with external efficiency approaching ~ 1%-level

  3. Concrete Embedded Dye Sensitized Solar Cell J. Alward¹, A. Torres¹ T. Hosseini¹, I. Flores-Vivian², K. Sobolev², N. Kouklin¹ 1- Department of Electrical Engineering, University of Wisconsin-Milwaukee; 2- Department of Civil Engineering, University of Wisconsin-Milwaukee DSSC RESULTS • Voc ~0.465V, Isc ~135uA , Fill factor ~ 0.17, • Total Power Generated ~ 353uW, Maximum power generated ~10.9uW, Maximum Incident optical power ~370uW, Maximum Battery Effect Power ~39.8pW • Efficiency displayed by previous work ~ 0.001%, Efficiency displayed by updated device ~2.95% • Factor increase ~3000 (more than 3 orders of magnitude) CONCLUSION • The solar cell saw power conversion efficiency improvements by enhancing the conductivity of the counter electrode through CNF dispersion. • In order to use this device for civil applications, the fill factor must be increased to ~0.4. To do this, parasitic quantities in the device must be optimized. • To prepare this device for civil infrastructure, the other components of the configuration must be analyzed and optimized.

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