| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 봄 (04/25 ~ 04/27, 제주 ICC) |
| 권호 |
18권 1호, p.534 |
| 발표분야 |
에너지 |
| 제목 |
Mesoporous and partically reduced tungsten oxide as a highly catalytic counter electrode of dye sensizied solar cells |
| 초록 |
Typical dye sensitized solar cells(DSCs) consists of dye coated TiO2 photoanode, iodine electrolyte(I3-/I-) and platinum counter electrode. However, because the iodine electrolyte has limitations such as corrosive property to metal(Ag) and visible light absorption, recently, many researches on DSCs are focused on iodine free electrolyte. In this study, we applied disulfide/thiolate(T2/T-) redox couple as an iodine free electrolyte. In addition, we use mesoporous tungsten oxide partially reduced as a counter electrode because conventional platinum counter electrode showed poor catalytic activity with large charge transfer resistance(Rct) in T2/T- electrolyte. The mesoporous tungsten sub-oxide was synthezed by hard template method using KIT-6 silica followed by reduction process in H2/Ar mixed gas. The DSC based on mesoporous tungsten suboxide showed much smaller charge transfer resistance than platinum counter electrode attributed to the high catalytic active surface area and efficient electron penetration. |
| 저자 |
정인영, 조창신, Arokiam Anthonysamy, 김진곤, 이진우
|
| 소속 |
포항공과대 |
| 키워드 |
dye sensitized solar cell; counter electorde; mesoporous; iodine free electrolyte
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
