Koermer R, Butz B, Spiecker E, Peukert W (2012)
Publication Type: Journal article
Publication year: 2012
Publisher: American Chemical Society
Book Volume: 12
Pages Range: 1330--1336
Volume: 12
Issue: 3
Journal Issue: 3
DOI: 10.1021/cg201394y
In this work, the capability of gas phase synthesis for crystal shape engineering of silicon nanoparticles (SiNP) in a hot wall reactor is demonstrated. Therefore, the necessary boundary conditions for the formation of monodisperse spherical SiNP as well as octahedral shaped particles from silane pyrolysis are systematically deduced. The different shapes of the SiNP are ascribed to different growth regimes (reaction limitation, diffusion limitation) depending on the global process parameters. Single crystalline, defect-free, spherical particles with a mean diameter of 30 nm (geometric standard deviation below 1.1) and octahedra with a mean edge length of about 100 nm could be obtained solely by process parameter adjustment. Particle size and shape as well as crystallinity were characterized by scanning electron microscopy and X-ray diffraction. The inner structure and faceting of the particles was analyzed in detail by high resolution transmission electron microscopy. A model which elucidates the orientation relation between inner silicon structure and the particle shape is derived for the octahedra.
APA:
Koermer, R., Butz, B., Spiecker, E., & Peukert, W. (2012). Crystal Shape Engineering of Silicon Nanoparticles in a Thermal Aerosol Reactor. Crystal Growth & Design, 12(3), 1330--1336. https://doi.org/10.1021/cg201394y
MLA:
Koermer, Richard, et al. "Crystal Shape Engineering of Silicon Nanoparticles in a Thermal Aerosol Reactor." Crystal Growth & Design 12.3 (2012): 1330--1336.
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