Journal
NANOSCALE RESEARCH LETTERS
Volume 8, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1186/1556-276X-8-277
Keywords
Si nanowire; Porous structure; PL
Funding
- Major State Basic Research Development Program of China [2013CB632103, 2011CBA00608]
- National High-Technology Research and Development Program of China [2012AA012202, 2011AA010302]
- Chinese Academy of Sciences [GJHZ1316]
- Japan Society for the Promotion of Science [GJHZ1316]
- National Natural Science Foundation of China [61176013, 61177038]
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The enhanced room-temperature photoluminescence of porous Si nanowire arrays and its mechanism are investigated. Over 4 orders of magnitude enhancement of light intensity is observed by tuning their nanostructures and surface modification. It is concluded that the localized states related to Si-O bonds and self-trapped excitations in the nanoporous structures are attributed to the strong light emission.
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