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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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Size tailoring of aqueous germanium nanoparticle dispersions

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Title
Size tailoring of aqueous germanium nanoparticle dispersions
Author
Kim, SeongbeomWalker, BrightPark, Song YiChoi, HyosungKo, Seo-JinJeong, JaekiYun, Myoung HeeLee, Jeong ChulKim, Dong SukKim, Jin Young
Keywords
Chemical contamination; Germanium; Nanoparticles; Optoelectronic devices; Synthesis (chemical); Toxic materials
Issue Date
201409
Publisher
ROYAL SOC CHEMISTRY
Citation
NANOSCALE, v.6, no.17, pp.10156 - 10160
Abstract
We demonstrate a practical route to synthesize Ge nanoparticles (NPs) in multi-gram quantities via the laser pyrolysis of GeH4 gas. The size of the as-produced Ge NPs can be precisely controlled in the range of 19.0 to 65.9 nm via a subsequent etching procedure using a dilute H2O 2 solution. Stable water dispersions of Ge NPs yield particles with a Ge/GeO2 core-shell structure, however, the oxide shell can easily be removed and passivated by treatment with HCl. The feed materials used in this process are readily available and lead to non-toxic, water-based dispersions of Ge NPs. The scalability and convenience of this procedure make it attractive as a method to obtain Ge NP dispersions for use in applications such as optoelectronic devices and biosensors.
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DOI
http://dx.doi.org/10.1039/c4nr01596g
ISSN
2040-3364
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