The thickshell quantum dots right show very rare incidences of blinking as compared to the thinshell quantum dots left  This was detected over an interval of 3000ms measured by intensity in arbitrary units vs time Diagram courtesy of Los Alamos National Laboratory

The thick-shell quantum dots (right) show very rare incidences of blinking as compared to the thin-shell quantum dots (left.) This was detected over an interval of 3000ms, measured by intensity in arbitrary units vs. time. (Diagram courtesy of Los Alamos National Laboratory.)

Thick-Shell Quantum Dot Technology Increases Display Performance

A new thick-shell quantum dot technology has the potential to bring major improvements to the brightness of electronic displays and solid state LED lighting. Quantum Materials and the Los Alamos National Laboratory’s (LANL) “giant” quantum dot (QD) technology can facilitate a 10 to 100-fold improvement in solid-state brightness over traditional nanocrystal quantum dots.

Quantum dot “blinking,” or the tendency to momentarily flash off, has been a consistent challenge. These new thick-shell quantum dots help dramatically reduce the intermittent flashing through better separation absorption by the shell and emission by the core. Non-blinking quantum dots also produce higher light output with less heat generation.

For medical imaging applications, optoelectronics, lasers, telecommunication, and solar photovoltaics, LANL has also developed thick-shell “giant” QD near-infrared (NIR) emission. Quantum Materials plans to integrate the technology into its QD product line. The company hopes it will increase quality of performance and enhance stability and color rendering.

By using QD-LCD backplane displays, the lifetimes of commercial products is increased even when exposed to higher temperatures or light intensities. This allows for innovation in product development as well as more optimized designs.

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