Home > News > Quantum dots that produce white light
May 28th, 2008
Quantum dots that produce white light
Abstract:
Take an LED that produces intense, blue light. Coat it with a thin layer of special microscopic beads called quantum dots. And you have what could become the successor to the venerable light bulb.
The resulting hybrid LED gives off a warm white light with a slightly yellow cast, similar to that of the incandescent lamp.
Until now quantum dots have been known primarily for their ability to produce a dozen different distinct colors of light simply by varying the size of the individual nanocrystals: a capability particularly suited to fluorescent labeling in biomedical applications. But chemists at Vanderbilt University discovered a way to make quantum dots spontaneously produce broad-spectrum white light. The report of their discovery, which happened by accident, appears in the communication "White-light Emission from Magic-Sized Cadmium Selenide Nanocrystals" published online October 18 by the Journal of the American Chemical Society.
Source:
scienceblog.com
Bookmark:
| Related News Press |
News and information
Decoding hydrogen‑bond network of electrolyte for cryogenic durable aqueous zinc‑ion batteries January 30th, 2026
COF scaffold membrane with gate‑lane nanostructure for efficient Li+/Mg2+ separation January 30th, 2026
Display technology/LEDs/SS Lighting/OLEDs
Spinel-type sulfide semiconductors to operate the next-generation LEDs and solar cells For solar-cell absorbers and green-LED source October 3rd, 2025
Efficient and stable hybrid perovskite-organic light-emitting diodes with external quantum efficiency exceeding 40 per cent July 5th, 2024
Announcements
Decoding hydrogen‑bond network of electrolyte for cryogenic durable aqueous zinc‑ion batteries January 30th, 2026
COF scaffold membrane with gate‑lane nanostructure for efficient Li+/Mg2+ separation January 30th, 2026
Quantum Dots/Rods
A new kind of magnetism November 17th, 2023
IOP Publishing celebrates World Quantum Day with the announcement of a special quantum collection and the winners of two prestigious quantum awards April 14th, 2023
Qubits on strong stimulants: Researchers find ways to improve the storage time of quantum information in a spin rich material January 27th, 2023
NIST’s grid of quantum islands could reveal secrets for powerful technologies November 18th, 2022
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||