| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Layer-by-Layer Self-Assembled Graphene Multilayers as Pt-free Alternative Counter Electrodes in Dye-sensitized Solar Cells |
| 초록 |
The neat rGO-based counter electrodes were developed via two types of layer-by-layer (LBL) self-assembly (SA) methods: spin coating and spray coating methods. In spin coating method, two sets of multilayer counter electrodes were fabricated on poly(diallyldimethylammonium chloride) (PDDA) coated fluorine-doped tin oxide (FTO) substrates using [GO(-)] combined with [N-GO(+)] ([rGO(-)/N-rGO(+)]n) or with [NS-GO(+)] ([rGO(-)/NS-rGO(+)]n). The DSSCs employing new types of counter electrodes exhibited ~7.0 and ~6.2% power conversion efficiency (PCE) based on ten bilayers of [rGO(-)/N-rGO(+)]10 and [rGO(-)/NS-rGO(+)]10, respectively. The DSSCs equipped with blend of one bilayer of PDDA[rGO(-):N-rGO(+)] and [rGO(-):NS-rGO(+)] prepared from spray coating showed ~ 6.4 and ~ 5.6% PCE, respectively, with ~ 56% fill factor value. This work indicates that combination of un-doped, nitrogen-doped and/or nitrogen sulfur dual-doped reduced graphene oxides can be used as a new class of electro catalysts as alternative electrodes in conventional photovoltaic devices. |
| 저자 |
김동하, Kyungwha Chung, Adila Rani
|
| 소속 |
Ewha womans Univ. |
| 키워드 |
DSSC; graphene; counter electrode
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| E-Mail |
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