| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 가을 (10/11 ~ 10/12, 일산킨텍스) |
| 권호 |
32권 2호 |
| 발표분야 |
전지기술과 고분자재료 |
| 제목 |
Surface Modification of Platinum Counter Electrode with PEG-thiols and Application to the Dye-Sensitized Solar Cells Employing Polymer Electrolytes |
| 초록 |
The charge transfer process of the solid polymer electrolyte/Pt counter electrode interface and the diffusion coefficient of triiodide in the electrolyte are important parameters for determining the energy conversion efficiency of DSSCs. Because polymer electrolyte has lower ionic conductivity and diffusion coefficient than liquid electrolyte has. Besides, relatively slow redox reaction is occurred at the interface and polymer electrolyte is less compatible with Pt counter electrode than liquid electrolyte. As a method of improvement of electron transfer and compatibility at the interface, PEG-thiols were introduced as a surface modifier on the Pt counter electrode. Electrochemical impedance spectroscopy was applied as a suitable technique to characterize the interface. DSSCs using modified Pt counter electrode with PEG-thiols yielded high cell performance such as increased in current density as well as better interfacial compatibility. |
| 저자 |
이용건1, 차국헌1, 강용수2
|
| 소속 |
1서울대, 2한양대 |
| 키워드 |
Pt counter electrode; polymer electrolyte; PEG-thiols; charge transfer process
|
| E-Mail |
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