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Controlled Metal Photodeposition

Ames Laboratory

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Technology Marketing Summary

A reliable syntheses of semiconductor-metal heterostructure has been developed to enable application of materials in catalytic, magnetic, and opto-electronic devices, and Iowa State University, The Ames Laboratory's Contractor, is looking for industry partners to commercialize this technology.

Description

Interest in the synthesis of colloidal semiconductor-metal hybrid nanostructures has grown exponentially in recent years. Laser spot irradiation has been reported to have some control over metal deposition; however this process has low yields and requires expensive equipment. it also has the potential to change the structure of the metal deposit as a result of the high energy intensity of the laser. Ames Laboratory researchers have discovered a method that enables illumination of much larger areas at a time and that provides unprecedented control over deposition locale. This could lead to a larger synthetic throughput and wider general availability of finely-structured semiconductor-metal hybrid heterostructures. Initial studies of the process to obtain II.VI semiconductor (cadmium selenium/sulfide) nanorods with active metal (either platinum or palladium) nanoparticles have shown the heterostructrues become redox-active upon illumination and are capable of mediating photo-induced chemical transformations. The technology results in better, cheaper and more widely available photocatalytic materials for renewable energy and environmental remediation applications.

Benefits
  • Controlled fabrication of colloidal semiconductor-metal hybrid heterostructures
  • High yields of site-selective nanoparticles
  • Simple, scalable method for metal photodeposition
Applications and Industries

The technology has potential for applications in catalytic and magnetic materials, as well a opto-electronic devices.

More Information

Lab scale samples are available

Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
03956DevelopmentLicensed12/06/201212/06/2012

Contact AMES About This Technology

To: Stacy Joiner<joiner@ameslab.gov>