| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Antimony-doped graphene nanoplatelets as a superior counter electrode for highly stable, efficient dye-sensitized solar cells |
| 초록 |
Antimony-doped graphene nanoplatelets have been synthesized via a simple mechanochemical ball-milling with graphitic carbon and solid Sb as superior counter electrode for highly stable and efficient dye-sensitized solar cells (DSSCs). The electrocatalytic activities of SbGnPs were investigated by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The SbGnPs as counter electrodes (CEs) exhibited much better electrocatalytic performances than Pt counter electrodes toward a Co(bpy)32+/3+ redox couple, leading to excellent photovoltaic performances in dye-sensitized solar cells (DSSCs) employing the SGT-021 as a zinc-porphyrin based dye. SbGnP-CE demonstrated the high electrocatalytic stability, displaying nearly zero loss of electrocatalytic activities even after 1,000 cycles. Devices based on the SbGnPs show the average power conversion efficiency of 11.83% with enhanced fill factor and Jsc compared to Pt-CE (11.09%). |
| 저자 |
김환규1, 백종범2, 주명종3, 강성호4, 최인택5, 김홍모6
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| 소속 |
1Global GET-Future Lab. & Department of Advanced Materials Chemistry, 2Korea Univ., 32511 Sejong-ro, 4Sejong 339-700, 5Korea, 6School of Energy Engineering/Low-Dimensional Carbon Materials Center |
| 키워드 |
Ball-milling; antimony-doped graphene nanoplatelets; dye-sensitized solar cells; counter electrode
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| E-Mail |
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