High Responsivity Photoconductors Based on Iron Pyrite Nanowires Using Sulfurization of Anodized Iron Oxide Nanotubes

详细信息    查看全文

• 作者：Jiang Wu ; Lihui Liu ; Shenting Liu ; Peng Yu ; Zerui Zheng ; Muhammad Shafa ; Zhihua Zhou ; Handong Li ; Haining Ji ; Zhiming M. Wang
• 刊名：Nano Letters
• 出版年：2014
• 出版时间：October 8, 2014
• 年：2014
• 卷：14
• 期：10
• 页码：6002-6009
• 全文大小：518K
• ISSN：1530-6992

文摘

Iron pyrite (FeS₂) nanostructures are of considerable interest for photovoltaic applications 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 through anodization of iron foils. Characterization of the iron sulfide 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.

Keywords:

Iron pyrite; sulfurization; anodization; self-assembly; nanowire