Room-temperature PL spectra of Si NWAs prepared at different concentrations. (a) PL spectrum of Si NWAs prepared at different H2O2 concentrations. Inset is the enlarged PL spectrum in the dotted square area. (b) The fitted PL spectrum of Si NWAs obtained at 5 M H2O2 concentration.
Zhang et al. Nanoscale Research Letters 2013 8:277 doi:10.1186/1556-276X-8-277