Egg-crate solves quantum dot problems

Scientists have used an innovative method to aid the control of molecules in quantum-dot LED design.

Researchers at the Harvard School of Engineering and Applied Sciences (SEAS) have revealed that a new architecture, which involves nestling quantum dots in insulating structures similar to egg-crates, that means the "troublesome" organic molecules called ligands could now be used to create more versatile quantum-dot light-emitting devices (QD-LEDs).

"With quantum dots, the chemical environment that's optimal for growth is usually not the environment that's optimal for function," explained co-principal investigator Venkatesh Narayanamurti, Benjamin Peirce Professor of Technology and Public Policy at SEAS.

The new QD-LED has been claimed to resemble a sandwich with a single active layer of quantum dots nestled in insulation and trapped between two ceramic electrodes and the dots kept apart from each other by the egg-create design.

It is hoped that the new development will have huge positive repercussions for the technology industry.

Posted by Ben Evans