American Chemical Society
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Single-Crystalline Branched Zinc Phosphide Nanostructures:  Synthesis, Properties, and Optoelectronic Devices

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journal contribution
posted on 2007-02-14, 00:00 authored by Rusen Yang, Yu-Lun Chueh, Jenny Ruth Morber, Robert Snyder, Li-Jen Chou, Zhong Lin Wang
Hierarchical tree-shaped nanostructures, nanobelts, and nanowires of Zn3P2 were synthesized in a thermal assisted laser ablation process. All nanostructures are tetragonal phased Zn3P2 with excellent crystallinity and are free from an oxidization layer according to electron microscopy and X-ray diffraction analyses. Optical measurement revealed a strong absorption from the ultraviolet to near-infrared regions. Optoelectronic devices fabricated using individual nanowires demonstrate a high sensitivity and rapid response to impinging light. A crossed heterojunction of an n-type ZnO nanowire and a p-type Zn3P2 nanowire has been characterized, and it offers a great potential for a high efficient spatial resolved photon detector.