| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 봄 (04/12 ~ 04/13, 제주 ICC) |
| 권호 |
32권 1호 |
| 발표분야 |
유기태양전지(분자전자 부문위원회) |
| 제목 |
Modfication of Platinum Counter Electrode with PEG-thiols and Application to the Dye-Sensitized Solar Cells Employing Polymer Electrolytes |
| 초록 |
The charge-transfer resistance of the solid polymer electrolyte/Pt counter electrode interface and the diffusion coefficient of triiodide in the electrolyte are important parameters for the efficiency of DSSCs. Because polymer electrolyte has lower ionic conductivity and diffusion coefficient than liquid electrolyte. 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 used as a monolayer on the Pt counter electrode. Electrochemical impedance spectroscopy was applied as a suitable technique to characterized the interface. DSSCs using this modified electrode yielded high cell performance such as increased in current density as well as better interfacial compatibility compared to DSSCs employing previously reported polymer electrolytes. |
| 저자 |
이용건1, 차국헌1, 강용수2
|
| 소속 |
1서울대, 2한양대 |
| 키워드 |
DSSCs; polymer electrolyte; Pt counter electrolyte; PEG-thiols
|
| E-Mail |
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