Atmospheric-pressure glow plasma synthesis of plasmonic and photoluminescent zinc oxide nanocrystals

作者：Bilik N; Greenberg B L; Yang J; Aydil E S; Kortshagen U R

来源：Journal of Applied Physics, 2016, 119(24): 243302.

DOI：10.1063/1.4954323

In this paper, we present a large-volume (non-micro) atmospheric pressure glow plasma capable of rapid, large-scale zinc oxide nanocrystal synthesis and deposition (up to 400 mu g/min), whereas in the majority of the literature, nanoparticles are synthesized using micro-scale or filamentary plasmas. The reactor is an RF dielectric barrier discharge with a non-uniform gap spacing. This design encourages pre-ionization during the plasma breakdown, making the discharge uniform over a large volume. The produced zinc oxide nanocrystals typically have diameters ranging from 4 to 15 nm and exhibit photoluminescence at approximate to 550 nm and localized surface plasmon resonance at approximate to 1900 cm(-1) due to oxygen vacancies. The particle size can be tuned to a degree by varying the gas temperature and the precursor mixing ratio. Published by AIP Publishing.

• 出版日期2016-6-28