Researchers achieve breakthrough with blue LEDs based on perovskite quantum dots

Research using the Canadian Light Source (CLS) at the University of Saskatchewan could help bring perovskite QDs display technology closer to commercilization.

Quantum dots are nanocrystals that glow, a property that scientists have been working with to develop next-generation LEDs. When a quantum dot glows, it creates very pure light in a precise wavelength of red, blue or green. Conventional LEDs, found in TV screens today, produce white light that is filtered to achieve desired colors, a process that leads to less bright and muddier colors.

A new approach could result in efficient and stable perovskite QLEDs

Researchers at the College of Materials Science and Engineering at Nanjing University of Science and Technology in China have developed a technique that greatly enhances perovskite QLEDs' performance and stability compared to single interface processing.

New passivation approach yields efficient QDLEDs imageThe structure of QLED based on QD films passivated without (b) and with passivation (c). Image from Nature Communications

The team proposed a bilateral passivation strategy through passivating the top and bottom interface of the QD film with organic molecules.

Researchers use perovskite QDs to design a device that mimics brain cells used for human vision

University of Central Florida researchers are helping to close the gap separating human and machine minds, using a technology based on perovskite quantum dots. In a recent study, a UCF research team showed that by combining two promising nanomaterials into a new superstructure, they could create a nanoscale device that mimics the neural pathways of brain cells used for human vision.

"This is a baby step toward developing neuromorphic computers, which are computer processors that can simultaneously process and memorize information," said Jayan Thomas, an associate professor in UCF's NanoScience Technology Center and Department of Materials Science and Engineering. "This can reduce the processing time as well as the energy required for processing. At some time in the future, this invention may help to make robots that can think like humans."