| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
대학원생 구두발표 (영어발표, 발표15분) |
| 제목 |
Poly(3,4-ethylenedioxythiophene) Quantum Dot-Sensitized Solar Cells in the Solid-State Utilizing Polymer Electrolyte |
| 초록 |
Poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(hydroxymethyl-3,4-ethylenedioxythiophene) (PEDOT-OH) quantum dots (QDs) are introduced for solid-state QD-sensitized solar cells for the first time. These two polymer QDs were prepared by top-down method from PEDOT and PEDOT-OH nanofibers. PEDOT-OH QDs have higher molecular weight, wider range of light absorption, and tighter adsorption onto the TiO2 surface, compared to PEDOT QDs, yielding higher photocurrent density and efficiency over 1% under 100 mW/cm2, which is higher than that of most carbon dot sensitizers ever reported. The range of the light absorption is broadened by spontaneous re-doping the polymer QDs by I2 and/or I3- dissolved in the polymer electrolyte. Also, QDSCs show excellent long-term stability over 360 minutes. These results suggest a new avenue to utilize polymer QDs as a new sensitizer for solar cells, and expect the much higher efficiency achieved by optimizing the structure of polymer QDs. |
| 저자 |
김태언, 이성진, 정동민, 이태경, 김병수, 문기현, 채일석, 강용수
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| 소속 |
한양대 |
| 키워드 |
polymer dots; PEDOT; solar cells; sensitizers; anchoring groups; soild-polymer electrolytes
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| E-Mail |
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