Thick-shell quantum dots boosts solid-state brightness 100-fold

Thick-shell quantum dots boosts solid-state brightness 100-fold

Technology News |
By eeNews Europe

High brightness leads to efficient use of the materials and increased performance in electronic displays and solid state (LED) lighting.

‘Blinking’ is a tendency of quantum dots to flash off momentarily  which is a challenge for certain quantum dot applications. LANL scientists have discovered that thick-shelling quantum dots reduces fluorescence intermittency by better separating absorption by the shell and emission by the core, suppressing blinking.

Commercial product lifetimes can be increased in QD-LCD backplane displays, solid state lighting films and projection lighting because the thick-shell technology has demonstrated the ability to extend the service life of quantum dots exposed to higher temperatures and/or high intensity light. Non-blinking quantum dots that can also produce higher light output with less heat generation are anticipated to spur new product development and optimize designs.

LANL has also claims to have achieved thick-shell ‘Giant’ QD near-infrared (NIR) emission for a major advance affecting medical imaging applications, optoelectronics, lasers, telecommunication and solar photovoltaics. For example, targeted cancer cells will be easier to identify and track, and varied absorption and emission ranges offer tailored performance in electronics and solar designs.

Quantum Materials plans to integrate the LANL thick-shell technology into the company’s quantum dot product line. Quantum Materials’ automated process is capable of manufacturing industrial-scale quantities while maintaining tight uniformity and makes possible the reliable, economical production of thick-shell tetrapod quantum dots having the exact characteristics necessary for specific applications.

Stephen B. Squires, Quantum Materials CEO and Founder said, "We believe that the number of quantum dot performance improvements afforded by adding thick-shell technology to our Tetrapod Quantum Dots will set us significantly ahead of our competition. Our ability to manufacture uniform industrial-scale quantities of quantum dots engineered for optimal application-specific performance parameters will expedite acceptance of these new technologies by display and lighting manufacturers."

David Doderer, QMC VP of R&D added, "Combining LANL thick-shelling abilities with QMC’s  tetrapod quantum dots’ properties of high uniformity, and narrow emission (higher color purity) will  be revolutionary in affecting quantum dot lifetime, quality of performance, enhancing of stability, and color rendering."

The technology was made available through LANL’s new Express Licensing Program.  

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