Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 39, Pages 11829-11833Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201605516
Keywords
black phosphorus; conductive materials; nanowires; red phosphorus; transistors
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Funding
- SARI-Drexel seed grant
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Heating red phosphorus in sealed ampoules in the presence of a Sn/SnI4 catalyst mixture has provided bulk black phosphorus at much lower pressures than those required for allotropic conversion by anvil cells. Herein we report the growth of ultra-long 1D red phosphorus nanowires (>1 mm) selectively onto a wafer substrate from red phosphorus powder and a thin film of red phosphorus in the present of a Sn/SnI4 catalyst. Raman spectra and X-ray diffraction characterization suggested the formation of crystalline red phosphorus nanowires. FET devices constructed with the red phosphorus nanowires displayed a typical I-V curve similar to that of black phosphorus and a similar mobility reaching 300 cm(2)V(-1)s with an I-on/I-off ratio approaching 10(2). A significant response to infrared light was observed from the FET device.
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