Dye sensitized solar cell fabricated by self-made air spraycoating system
| Autor: | Min-Hsiung Huang, 黃閔雄 |
|---|---|
| Rok vydání: | 2014 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 102 In this study, the self-made spray coating system was constructed by a semiautomatic spray nozzle, solenoid valve, air compressor and movable platform. First, the TiO2 photo-electrode was deposited by a self-made spray coating system and applied in dye sensitized solar cell. The features of the cell with various thicknesses of TiO2 films were evaluated by a solar cell measurement system under one sun illumination of 100mW/cm2. When the thickness of the film was 14.77μm, the efficiency of 4.82% was the highest. The I-V curves indicate that the cell performances of ISC and FF were 10.81mA and 0.61, respectively. According to the results of electrochemical impedance analysis when the thickness of the TiO2 film was 14.77μm, the charge transport resistance at theTiO2/dye/electrolyte interface (Rct2) was the lowest. Second, the carbon film was also deposited by a self-made spray coating system. The performances of solar cell consisted of a spray-coated TiO2 photo-electrode and carbon counter-electrode were evaluated by a source meter under one sun illumination of 100mW/cm2. When the thickness of the carbon film was 12.38μm, the solar cell converting efficiency (η), short current density (JSC) and Fill-Factor (FF) have the highest value of 2.72%, 10.73 mA/cm2, 43.82, respectively. According to the results of electrochemical impedance analysis when the thickness of the carbon film was 12.38μm, the electrochemical resistance of carbon counter electrode (Rct1) was the lowest. Finally, the optimal thicknesses of carbon thin film and TiO2 thin film were packaged with a sandwich-like structure to form a module by using surlyn thin film (60μm) and a packaging machine. After long-term stability test, the efficiency of solar cells decreases, because the charge transfer resistance at the TiO2/dye/electrolyte (Rct2) became large. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|