상세정보
학술지
Iodide-functionalized graphene electrolyte for highly efficient dye-sensitized solar cells
- 발행일
- 201208
- 출처
- Journal of Materials Chemistry, v.22 no.32, pp.16477-16483
- ISSN
- 0959-9428
- 출판사
- Royal Society of Chemistry (RSC)
- 협약과제
- 12ZK1100, 그린IT 융.복합 기술개발, 이수인
- 초록
- 1-Octyl-2,3-dimethylimidazolium iodide, ODI, was used as an electron acceptor to functionalize graphene to impart electrocatalytic activity for triiodide reduction in dye-sensitized solar cells (DSSCs). Raman and X-ray photoelectron spectroscopic measurements identified the graphene formation from graphene oxide with ODI. The resultant graphene positively charged via an intermolecular charge-transfer process with ODI showed remarkable electrocatalytic activity toward triiodide reduction. The inner work mechanism of solar cell devices was analyzed by intensity-modulated photovoltage spectroscopy, by intensity modulated photocurrent spectroscopy, and through an analysis of photovoltage transients. The results indicated that ODI-graphene electrolyte provides effective intermolecular charge transfer, thus making it feasible for use in the creation of high-performance DSSC devices. © The Royal Society of Chemistry 2012.
- KSP 제안 키워드
- 3-dimethylimidazolium, Dye-sensitized solar cells(DSCs), Electron acceptor, Functionalized graphene(f-GNS), Graphene oxide(GOS), High performance, Intensity modulated photocurrent spectroscopy, Intermolecular charge transfer, Positively charged, Triiodide reduction, X-ray photoelectron spectroscopic