Journal
NANO LETTERS
Volume 14, Issue 10, Pages 6002-6009Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl503059t
Keywords
Iron pyrite; sulfurization; anodization; self-assembly; nanowire
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Funding
- Specialized Research Fund for the Doctoral Program of Higher Education of China through SRFDP [20120185120037]
- National Higher Education Institution General Research and Development [ZYGX2012J034]
- National Basic Research Program (973) of China [2015CB358600, 2013CB933801]
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Iron pyrite (FeS2) nanostructures are of considerable interest for photovolatic applicaitons due to improved material quality compared to their bulk counterpart. As an abundant and nontoxic semiconductor, FeS2 nanomaterials offer great opportunities for low-cost and green photovoltaic technology. This paper describes the fabrication of FeS2 nanowire arrays via sulfurization of iron oxide nanotubes at relatively low temperatures. A facile synthesis of ordered iron oxide nanotubes was achieved throught anodization of iron foils. Characterization of the iron sufide nanowires indicates that pyrite structures were formed. A prototype FeS2 nanowire photoconductor demonstrates very high responsivity (>3.0 A/W). The presented method can be further explored to fabricate various FeS2 nanostructures, such as nanoparticles, nanoflowers, and nanoplates.
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