Controlling Dissolution of Elemental Selenium Improves Selenide Nanoparticles

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Selenide nanoparticles are important materials with applications in electronics, solar cells, light emitting diodes (LEDs), and biology. Making selenide particles first starts with the dissolution of elemental selenium with a reaction solvent. Current methods for making dissolved selenium, such as using organo-phosphine compounds or sodium borohydrine, are costly, unstable, and lead to contaminated, impure selenium solutions.

Researchers at Purdue University have developed a new method to control the dissolution of elemental selenium into a pure selenium solution. This method involves making a highly reducing atmosphere, which then solvates the selenium. The resulting reaction can be controlled and tuned to produce a range of desired solutions. This also provides opportunities to conduct additional chemical reactions with a pure selenium solution and create mixed chalcogen materials.

-Free of contaminants and impurities
-Flexible and controllable
-More stable and less costly

Potential Applications:
-Solar cells
Nov 21, 2014
Utility Patent
United States
Apr 25, 2017

Nov 21, 2013
United States
Purdue Office of Technology Commercialization
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