Enhanced performance of a dye-sensitized solar cell with an electrodeposited-platinum counter electrode |
| |
Authors: | Chang Ho Yoon Jiwon Lee Kang-Jin Kim |
| |
Affiliation: | a Department of Chemistry, Korea University, Seoul 136-713, South Korea b Samsung SDI Co. Ltd., Gyeonggi-do 449-577, South Korea c Department of Chemistry, Daejin University, Pocheon, Gyounggi-do 487-711, South Korea |
| |
Abstract: | A counter electrode was prepared for a dye-sensitized solar cell (DSSC) through electrochemical deposition of mesoporous platinum on fluorine-doped tin oxide glass in the presence of a structure-directing nonionic surfactant, octaethylene glycol monohexadecyl ether (C16EO8). The DSSC fabricated with the electrochemically deposited Pt (ED-Pt) counter electrode rendered a higher solar-to-electricity conversion efficiency of 7.6%, compared with approximately 6.4% of the cells fabricated with the sputter-deposited or most commonly-employed thermal deposited Pt counter electrodes. This enhanced efficiency is attributed to the higher short-circuit photocurrent arising from the increases in the active surface area and light reflection as well as the decrease in the sheet resistance of the ED-Pt film, relative to those of the Pt films prepared by the other two deposition methods. The sputter-deposited Pt film yielded almost the same photovoltaic characteristics as the thermal deposited Pt film. The Pt films were characterized by FE-SEM, AFM, cyclic voltammetry, chronoamperometry, electrochemical impedance spectroscopy, sheet resistance measurements, adhesion tests, and light reflection tests. |
| |
Keywords: | Electrodeposited-Pt counter electrode Thermal and sputter depositions Active surface area Charge transfer resistance Dye-sensitized solar cell |
本文献已被 ScienceDirect 等数据库收录! |
|