title: Size tuning of luminescent silicon nanoparticles with meso-porous silicon membranes.
abstract: Size tuning of silicon (Si) nanoparticles (NPs) with the use of meso-porous silicon (meso-PS) free-standing layers is reported for the first time. Accumulation of Si NPs inside the membrane pores during the filtering process (NP transport through the meso-PS) leads to an auto-filtration effect (called Si-by-Si (SBS) filtration) allowing more efficient size selection of the NPs. General complex fractal shape and surface chemistry of the whole porous network, layer thickness as well as a given initial NP size dispersion determine final size of the NPs in the filtered solution. Moreover, quantum of step-like NP size increasing equal to 0.12 nm was found.
authors: Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Str., 01601 Kyiv, Ukraine. tetiana.serdiuk@gmail.com
authors: T
authors: T
authors: Serdiuk
authors: V
authors: V
authors: Lysenko
authors: S
authors: S
authors: Alekseev
authors: V A
authors: VA
authors: Skryshevsky
mesh_terms: D049449:Luminescence; D008567:Membranes, Artificial; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D008567:Membranes, Artificial; D012825:Silicon