Glass with embedded nanocrystals emits light in UV spectrum

A wet chemistry technique was used to develop an innovative synthesis strategic plan that enables LEDs fabrication, where a range of chemical reactions occur in a beaker. The glass containing the nanocrystals therefore emits light in the UV spectrum.

A group of multinational researchers has developed a process to produce glass-based, inorganic LEDs that emit light in the UV spectrum. LED-based lights can be used in biomedical and ecological diagnostics due to their cost effectiveness and chemical stability. The difficulty involved in acquiring UV emission has been overcome by the new process developed by Sergio Brovelli from Los Alamos National Laboratory, in association with a group of scientists, headed by Alberto Paleari, from the University of Milano-Bicocca, Italy.
The study elaborates about an emission of light in the UV range from a novel glass-based substance, which can be attached to the silicon chips. The resulting devices exhibit electroluminescence, electrical conductivity and mechanical stability, and are chemically inert.
The idea combines the advanced methods in nanoscience to deliver nanomaterials comprising two or more constituents. The new device uses standard glass in which a tin monoxide shell enclosed to tin dioxide nanocrystals has been used. The electrical response of the substance can be controlled by changing the thickness of the shell.
A wet chemistry technique was used to develop an innovative synthesis strategic plan that enables LEDs fabrication, where a range of chemical reactions occur in a beaker. The glass containing the nanocrystals therefore emits light in the UV spectrum.
According to Brovelli, the device will be useful for medical diagnosis and can be used either as a light source for implantation into body to activate photochemical reactions or as a lab-on-chip. They can be used for selective activation of photo-sensitive drugs or as a probe to detect the existence of fluorescent markers. These substances can therefore be produced at low cost and can be combined with the existing technology for large-scale production.