Study of Multi-layer Structure Working Electrodes and Composite Counter Electrodes for Dye-Sensitized Solar Cell
| Autor: | Chih-Chien Chang, 張志謙 |
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| Rok vydání: | 2014 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 102 The study is to investigate the two parts of working electrode and counter electrode. In the first part, the anatase TiO2 nanoparticles and hollow spherical were prepared by hydrothermal method, then use screen printing method to fabricate active layer, blended layer and scattering layer to compose the optimization multiple structures working electrode. This multiple structures not only can increase the dye adsorption but also the light scattering ability, performance of the current density 17.49 mA/cm2, and the efficiency was 9.24%. In the second part, the fabrication of platinum (Pt) counter electrodes was performed with various preparation methods and different materials. Counter electrodes such as Pt/graphene via screen printing and Pt by sputtering was utilized in DSSCs and their photovoltaic performances were compared. Due to the higher dispersibility of add graphene in the Pt could increased catalytic ability, the Pt/graphene device exhibited a lower electron transport resistance (R1) than Sputter Pt CE device as observed from electrochemical impedance data. The Pt/graphene device exhibited a higher current density 14.20 mA/cm2 and the efficiency of 7.88%, which was relatively higher than Sputter Pt CE (23.90%). The optimum conditions for the two parts of working electrode and counter electrode, the performance of current density 18.52 mA/cm2, and the efficiency can be reached 9.52%. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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