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Microbially Mediated Method for Making Semiconductor Nanoparticles

Oak Ridge National Laboratory

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Technology Marketing SummaryTo address the commercial need for bulk production at a reasonable cost, ORNL researchers developed a microbially mediated method for the production of semiconductor nanoparticles. This invention also offers a means of microbial synthesis that yields a purer and more uniform product. DescriptionNanoparticles with metal non-oxide compositions, also known as semiconductor or quantum dot nanoparticles, are increasingly used in a wide range of electronics, including LED displays, solar cells, and medical imaging. Yet the energy requirements of current production methods are too costly for commercial applications.

The invention facilitates economical output of tailored nanoparticles via a scalable production scheme. In addition, the invention has the capability of defining the size, shape, composition, and/or crystalline structure of the nanoparticles. The location or width of the photoluminescent peak can also be controlled. Through the process of bacterial metabolism, the desired non-oxide compound is produced and may be collected as nanometer-sized particles.
  • <1% cost of traditional production methods
  • Scalable production scenario
  • Structure and size can be tailored
Applications and Industries
  • LED displays
  • Solid state lighting
  • Photovoltaic solar cells
  • Biomedical treatments
  • Fluorescent dyes
  • Light-to-energy production
  • Friend/foe battlefield tagging
More InformationTommy J. Phelps1 and Robert J. Lauf
Biosciences Division
Environmental Sciences Division
Oak Ridge National Laboratory
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
UT-B ID 200701968DevelopmentAvailable10/20/201012/08/2010

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To: Nestor Fronco<>