New process works with quantum dots for next generation HD displays

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An international team of researchers has developed a new process that manipulates quantum dots for next generation HD TV and smart device displays.

The team's findings, reported in Science Advances, reveal that when quantum dots - tiny flecks of semiconductor - are clustered together they are more fluorescent, providing a wide variety of colours.

The advance has been made by scientists at Queen's University Belfast, who’ve worked with colleagues from Switzerland (ETH Zurich, Empa--Swiss Federal Laboratories for Materials Science and Technology), USA (Florida State University) and Taiwan (National Taiwan University of Science and Technology, National Synchrotron Radiation Research Centre).

Through the project, quantum dots containing methylammonium lead bromine (MAPbBr3) were created. The team found that by creating lamellar structures - fine layers, alternating between different materials - the human eye's response to the visible light was very high.

According to Queen’s, this means that the material re-emitted a lot of the light that it absorbed and very bright colours were created, a process named aggregation-induced emission (AIE) by the team.

The Queen's University team is led by Dr Elton Santos from the School of Mathematics and Physics.

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