Journal
NANO LETTERS
Volume 9, Issue 10, Pages 3550-3554Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl9017594
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- U.S. Department of Energy [DE-AC02-05CH11231]
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Herein we demonstrate a novel electroless etching synthesis of monolithic single-crystalline mesoporous silicon nanowire arrays with a high surface area and luminescent properties consistent with conventional porous silicon materials. These porous nanowires also retain the crystallographic orientation of the water from which they are etched. Electron microscopy and diffraction confirm their single-crystallinity and reveal the silicon surrounding the pores Is as thin as several nanometers. Confocal fluorescence microscopy showed that the photoluminescence (PL) of these arrays emanate from the nanowires themselves, and their PL spectrum suggests that these arrays may be useful as photocatelytic substrates or active components of nanoscale optoelectronic devices.
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