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- W129852823 abstract "The method of metal-assisted chemical etching produces a porous silicon layer. Palladium particles are deposited on both: multi-crystalline and Czochralski grown mono-crystalline Si wafers by immersing them in PdCl2 solution for 1 to 3 min. X-ray photoelectron spectroscopy analysis of Pd clusters shows a decrease in Pd metal fraction by prolonged immersion time t from FPd = 71:2% for t = 1 min to FPd = 61:4% for t = 3 min due to Pd oxidation process. Porous silicon forms by metal-assisted chemical etching in a HF:H2O2 solution for 1 to 3 min. Photoluminescence of metal-assisted chemical etched samples exhibits the peak with a maximum of t at ‚ = 650 nm independent of the etching time. Simultaneously, the intensity of the photoluminescence spectra strongly decreases for extended etching time t = 3 min. This behavior is attributed to increasing layer macroporosity, which strongly reduces amount of light emitting nanocrystallites." @default.
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- W129852823 date "2009-12-01" @default.
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- W129852823 title "Porous Silicon Formation by Metal-Assisted Chemical Etching" @default.
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- W129852823 doi "https://doi.org/10.12693/aphyspola.116.s-117" @default.
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