Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook
More News

Nanocrystals Enable Near-IR Organic LEDs

Facebook Twitter LinkedIn Email Comments
By incorporating InAs-based nanocrystals in a semiconducting polymer, a team at Technion-Israel Institute of Technology in Haifa and Hebrew University in Jerusalem has developed an organic LED that produces 1- to 1.3-µm tunable radiation. The team suggests that extending the output to 1.5 µm with the use of other nanocrystals may enable the production of economical emitters for last-mile telecommunications.

To produce the device, which they reported in the Feb. 22 issue of Science, the researchers coated 2.4-nm-diameter crystals of InAs with a 1.5-monolayer shell of ZnSe in a two-step process. They then introduced the nanocrystals into a solution of MEH-PPV or F6BT and spun-cast the mixture onto an ITO and glass substrate. The LED displayed an external efficiency of 0.5 percent but required a turn-on voltage of 15 V.

Photonics Spectra
Apr 2002
As We Go To PressBreaking NewsCommunicationslight sourcesPresstime BulletinLEDs

Comments
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, info@photonics.com

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.