TITLE

Improving selective thermal emission properties of three-dimensional macroporous silicon through porosity tuning

AUTHOR(S)
Garín, M.; Trifonov, T.; Rodríguez, A.; Alcubilla, R.; Marquier, F.; Arnold, C.; Greffet, J. -J.
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/25/2008, Vol. 93 Issue 8, p081913
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present a theoretical and experimental study on the effect of progressive porosity increase, through multiple oxidation/oxide removal steps, upon the optical characteristics in three-dimensional macroporous silicon. It is shown that, by increasing porosity, optical features can be pushed toward higher frequencies. Optimum porosities exist where normal or omnidirectional total reflection bandwidths are maximized, doubling the initial values. Results are confirmed experimentally through angle-resolved reflectance and thermal emission measurements.
ACCESSION #
34198802

 

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