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Chemical Vapor Synthesis of Size‐Selected Zinc Oxide Nanoparticles
Author(s) -
Polarz Sebastian,
Roy Abhijit,
Merz Michael,
Halm Simon,
Schröder Detlef,
Schneider Lars,
Bacher Gerd,
Kruis Frank E.,
Driess Matthias
Publication year - 2005
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200400085
Subject(s) - materials science , nanocrystalline material , spectroscopy , nanoparticle , chemical engineering , zinc , photoluminescence , silicon , microelectronics , fourier transform infrared spectroscopy , nanotechnology , metallurgy , optoelectronics , physics , quantum mechanics , engineering
ZnO can be regarded as one of the most important metal oxide semiconductors for future applications. Similar to silicon in microelectronics, it is not only important to obtain nanoscale building blocks of ZnO, but also extraordinary purity has to be ensured. A new gas‐phase approach to obtain size‐selected, nanocrystalline ZnO particles is presented. The tetrameric alkyl‐alkoxy zinc compound [CH 3 ZnOCH(CH 3 ) 2 ] 4 is chemically transformed into ZnO, and the mechanism of gas‐phase transformation is studied in detail. Furthermore, the morphological genesis of particles via gas‐phase sintering is investigated, and for the first time a detailed model of the gas‐phase sintering processes of ZnO is presented. Various analytical techniques (powder XRD, TEM/energy‐dispersive X‐ray spectroscopy, magic‐angle spinning NMR spectroscopy, FTIR spectroscopy, etc.) are used to investigate the structure and purity of the samples. In particular, the defect structure of the ZnO was studied by photoluminescence spectroscopy.