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- Creator:
- Huffaker, Diana L., Zhou, Hailong, Pozuelo, Martha, Tatebeyashi, Jun, Hicks, Robert F., Evoen, Vanessa, Kodambaka, Suneel, Gao, Li, and Liang, Baolai
- Description:
- Indium phosphide/indium arsenide phosphide core-shell nanopillars have been prepared by the vapor- liquid-solid method using liquid indium droplets as the catalyst. The indium droplets were generated in situ in the deposition reactor. The hexagonal nanopillars exhibited hexagonal shaped sidewalls with average width and height of 150 and 250 nm, respectively. Cross-section transmission electron microscopy with selected area electron diffraction and X-ray dispersion energy analysis verified that an InAsP layer, approximately 10 nm thick, coated the pillars. Photoluminescence spectra at 77 K yielded an extremely intense band at 0.76 eV (1.63 mm), which was due to the InAsP shell on the pillars
- Resource Type:
- Article
- Identifier:
- 0022-0248
- Campus Tesim:
- Northridge
- Creator:
- Goorsky, Mark S., Huffaker, Diana L., Goel, Niti, Prikhodko, Sergey, Hicks, Robert F., Hudait, Mantu K., Kodambaka, Suneel, Jackson, Mike, Pozuelo, Martha, Liang, Baolai, Woo, Robyn L., and Gao, Li
- Description:
- Vertical indium phosphide nanowires have been grown epitaxially on silicon (111) by metalorganic vapor-phase epitaxy. Liquid indium droplets were formed in situ and used to catalyze deposition. For growth at 350 °C, about 70% of the wires were vertical, while the remaining ones were distributed in the 3 other <111> directions. The vertical fraction, growth rate, and tapering of the wires increased with temperature and V/III ratio. At 370 °C and V/III equal to 200, 100% of the wires were vertical with a density of ∼1.0 × 109 cm−2 and average dimensions of 3.9 μm in length, 45 nm in base width, and 15 nm in tip width. X-ray diffraction and transmission electron microscopy revealed that the wires were single-crystal zinc blende, although they contained a high density of rotational twins perpendicular to the <111> growth direction. The room temperature photoluminescence spectrum exhibited one peak centered at 912 ± 10 nm with a FWHM of ~60 nm.
- Resource Type:
- Article
- Identifier:
- 1530-6984
- Campus Tesim:
- Northridge