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Enhanced visible and near-infrared optical absorption in silicon supersaturated with chalcogens
 

Summary: Enhanced visible and near-infrared optical absorption in silicon
supersaturated with chalcogens
Si H. Pan,1
Daniel Recht,2
Supakit Charnvanichborikarn,3
James S. Williams,3
and
Michael J. Aziz2,a
1
Martin A. Fisher School of Physics, Brandeis University, Waltham, Massachusetts 02453, USA
2
Harvard School of Engineering and Applied Sciences, Cambridge, Massachusetts 02138, USA
3
Department of Electronic Materials Engineering, Research School of Physics and Engineering,
The Australian National University, Canberra ACT 0200, Australia
Received 21 December 2010; accepted 17 February 2011; published online 23 March 2011
We show that single-crystal silicon supersaturated with sulfur S , selenium Se , or tellurium Te
displays a substantially enhanced absorption coefficient for light with wavelengths of 400 to 1600
nm. Alloys were prepared in silicon on insulator wafers by ion implantation followed by nanosecond
pulsed laser melting. Measurements of the absorption coefficient were made by direct transmission

  

Source: Aziz, Michael J.- School of Engineering and Applied Sciences, Harvard University

 

Collections: Physics; Materials Science