Gold, silver nanoclusters serve as LED emitters

Jan. 2, 2014
Leuven, Belgium--Two researchers at Imec have developed a way to use metal nanoclusters as light emitters, making the clusters possible candidates for use in LEDs.

Leuven, Belgium--Two researchers at Imec have developed a way to use metal nanoclusters as light emitters, making the clusters possible candidates for use in LEDs.1 The clusters of metal nanocrystals, which serve as quantum-confinement-based emitters, are synthesized into thin films; gold (au) nanoclusters produce light with a peak wavelength of 750 nm, while silver (Ag) nanoclusters produce light at 695 nm. The films are fabricated easily using solution-based processing.

Bjoern Niesen, who also works at École Polytechnique Fédérale de Lausanne (EPFL; Neuchatel, Switzerland), and Barry Rand, who is now an assistant professor at Princeton University, created LED films in which the electroluminescence peak of the LED matched with the earlier-measured photoluminescence of the MNCs in a solution state. The thin-film LED emits spectrally pure light with no parasitic emissions arising elsewhere in the LED. The threshold emission voltages for the Ag and Au based devices were 1.74 and 2.21 V, respectively.

The two researchers presented their results in December, 2013 at the Materials Research Society (MRS) Fall Meeting in Boston, MA (see https://mrsfall13.zerista.com/event/member/94683).

REFERENCE:

1. Bjoern Niesen and Barry P. Rand, Advanced Materials (2013); doi: 10.1002/adma.201304725

Sponsored Recommendations

Request a quote: Micro 3D Printed Part or microArch micro-precision 3D printers

April 11, 2024
See the results for yourself! We'll print a benchmark part so that you can assess our quality. Just send us your file and we'll get to work.

Request a free Micro 3D Printed sample part

April 11, 2024
The best way to understand the part quality we can achieve is by seeing it first-hand. Request a free 3D printed high-precision sample part.

How to Tune Servo Systems: The Basics

April 10, 2024
Learn how to tune a servo system using frequency-based tools to meet system specifications by watching our webinar!

Precision Motion Control for Sample Manipulation in Ultra-High Resolution Tomography

April 10, 2024
Learn the critical items that designers and engineers must consider when attempting to achieve reliable ultra-high resolution tomography results here!

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!