Single Crystalline Mesoporous Silicon Nanowire

Title
Single Crystalline Mesoporous Silicon Nanowire
Authors
Allon I. HochbaumDaniel Gargas황윤정Peidong Yang
Keywords
Silicon nanowire; Photoluminescence; Mesoporous Si; Electroless Etching
Issue Date
2009-10
Publisher
Nano letters
Citation
VOL 9, NO 10, 3550-3554
Abstract
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 wafer 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 photocatalytic substrates or active components of nanoscale optoelectronic devices.
URI
http://pubs.kist.re.kr/handle/201004/42738
ISSN
15306984
Appears in Collections:
KIST Publication > Article
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