Fabrication of high-aspect-ratio silicon nanopillar arrays with the conventional reactive ion etching technique View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2007-02

AUTHORS

Y.-F. Chang, Q.-R. Chou, J.-Y. Lin, C.-H. Lee

ABSTRACT

We fabricate silicon nanopillar arrays with pillar diameters smaller than 200 nm by using the conventional reactive ion etching (RIE) technique and nickel masks. We use the ratio between the lateral and vertical etching rates as an estimate of the etching anisotropy. The dependence of this ratio on the rf power, the chamber pressure, and the gas mixture is investigated systematically to achieve the largest etching anisotropy. Using the optimized etching parameters in the RIE process, we demonstrate silicon pillars with smooth surface, vertical sidewalls, and aspect ratios higher than 20. In addition, we employ dilute aqua regia to treat the pillars and shrink the diameters to 70 nm. The pillar height remains ∼2500 nm after the treatment. More... »

PAGES

193-196

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00339-006-3748-0

DOI

http://dx.doi.org/10.1007/s00339-006-3748-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1026894540


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