期刊
NANOSCALE
卷 6, 期 13, 页码 7281-7287出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr05061k
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资金
- National Natural Science Foundation of China [51372033, 51202022]
- Program for New Century Excellent Talents in University [NCET-10-0291]
- 111 Project [B13042]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20120185120011]
- Fundamental Research Funds for the Central Universities [ZYGX2010J031]
- University of Electronic Science and Technology of China [Y02002010301041]
Here we propose, for the first time, a new and green ethanol-thermal reaction method to synthesize high-quality and pure thiophene-sulfur doped reduced graphene oxide (rGO), which establishes an excellent platform for studying sulfur (S) doping effects on the physical/chemical properties of this material. We have quantitatively demonstrated that the conductivity enhancement of thiophene-S doped rGO is not only caused by the more effective reduction induced by S doping, but also by the doped S atoms, themselves. Furthermore, we demonstrate that the S doping is more effective in enhancing conductivity of rGO than nitrogen (N) doping due to its stronger electron donor ability. Finally, the dye-sensitized solar cell (DSCC) employing the S-doped rGO/TiO2 photoanode exhibits much better performance than undoped rGO/TiO2, N-doped rGO/TiO2 and TiO2 photoanodes. It therefore seems promising for thiophene-S doped rGO to be widely used in electronic and optoelectronic devices.
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