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. Author manuscript; available in PMC: 2012 Oct 5.
Published in final edited form as: Nanoscale. 2011 Aug 25;3(10):4060–4068. doi: 10.1039/c1nr10668f

Fig. 7.

Fig. 7

Optical properties of porous silicon nanowires. Photoluminescence spectrum of porous silicon nanowires synthesized from (a) 0.005 Ω · cm p-type Si(100); (b) 0.008–0.02 Ω · cm n-type Si(100) wafer; and (c) 1–10 Ω · cm n-type Si(100) wafer. (d) Overlap between confocal photoluminescence image and electron microscopy image for sample in a. (e) Overlap between confocal photoluminescence image and optical microscopy image for sample in b. (a, b, d, and e adapted from ref. 42,43. Copyright 2009 American Chemical Society. c adapted from ref. 47. Copyright 2011 Royal Chemical Society.)