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Knut Deppert

Knut Deppert


Knut Deppert

InSb Nanoparticles Produced by Spark Discharge Generation


  • Linus Ludvigsson
  • Markus Snellman
  • Martin Ek
  • Knut Deppert
  • Maria Messing

Summary, in English

We present the synthesis of monodisperse aerosol InSb nanoparticles of high crystalline quality using the spark discharge generation (SDG) method. Apart from successfully using metallic In and Sb electrodes, we demonstrate the feasibility of using pure semiconducting InSb wafers as electrode material. We investigated the influence of carrier gas on the quality of the size selected particles. We show that addition of 5% hydrogen in the carrier gas (nitrogen or argon) reduced particle oxidation and drastically lowered the compaction temperatures. Further we found an influence of the compaction temperature on the stoichiometry and crystallinity. While uncompacted particles contained excess Sb, the InSb particles reached 1:1 molar ratio after full compaction. The spark discharge method shows promise for generating large quantities of high-quality InSb nanoparticles with applications in e.g. optoelectronics and plasmonics, and the method may be extended to generate nanoparticles of other semiconductor materials.


  • Solid State Physics
  • NanoLund
  • Centre for Analysis and Synthesis
  • Synchrotron Radiation Research

Publishing year




Document type

Conference paper: abstract


  • Nano Technology

Conference name

21th International Vacuum Congress

Conference date

2019-07-01 - 2019-07-05

Conference place

Malmö, Sweden