Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

3-dimensional Light Emitting Diodes for future lighting technologies

12.07.2012
The Institute of Semiconductor Technology at Technische Universität (TU) Braunschweig is engaged in an EU-research project ‘GECCO’ developing a new pioneering generation of white light emitting diodes.
The innovative 3-dimensional assembly of the diodes is expected to provide more than tenfold the quantity of light output in comparison to those planar LEDs currently in use. The financial grant for this project amounts to a total sum of 3.8 million Euro, whereas the share of the TU Braunschweig amounts to 1.2 million Euro.

Already now, modern high-performance LEDs provide a bright light output at high efficiency and are meanwhile applied for automobile headlights, for example. At present, the production process for these kinds of LEDs is still not cost efficient enough and also the efficiency of these LEDs needs further improvement.

Tiny 'lighthouses' are more efficient

The international team of the GECCO project with their partners from Madrid, Bristol, Lodz, the OSRAM AG Munich and the OSRAM OS GmbH Regensburg is working hard on achieving their ambitious objectives.
Up to now, LEDs are being constructed in a planar way, meaning in layers and completely flat. The more light is being required, the more wafer area has to be produced, which is an expensive and laborious approach. The exceptional idea of the GECCO project is to assemble LEDs in a three-dimensional way so that actually every LED consists of a ‘light emitting tower’ from which the entire vertical surface is emitting light. Obviously the surface of the tower is much larger compared to the ground area of a planar LED. And in fact, it is exactly the gain of light emitting area that leads to a higher light output.

Thus, the manufacturing of an LED becomes much more cost-effective and as a result replacing ancient electric bulbs, halogen lamps as well as energy saving bulbs to LEDs is getting a lot more profitable. Considering the fact that currently 20 % of electrical energy worldwide is being utilized for illumination, this innovation provides an enormous potential as far as cost-effectiveness is concerned. In addition, LED lighting is particularly important for future electric mobility. Energy saving is of utmost importance in electric cars.
A million LEDs per square millimeter

The dimensions of the ‘light emitting towers’ are within the micrometer range. This means approximately one million LEDs fit on an area of one square millimeter. This process requires utmost precision which can only be achieved by applying nanotechnology manufacturing techniques.

The GECCO project is coordinated by Prof. Andreas Waag from the Institute of Semiconductor Technology, which is part of the Electrical Engineering Department of the Technische Universität Braunschweig.
With this project the Faculty of Electrical Engineering, Information Technology, Physics sets another example as to the further and ongoing strengthening of the University’s research profile in the specialization of NanoSystemsEngineering – this time in the true sense of the word – a bright and shining sign.

Background

The Institute of Semiconductor (IHT) is an institution of the Technische Universität Braunschweig and belongs to the Faculty of Electrical Engineering, Information Technology, Physics. The institute and its 40 staff members are engaged in particular in the research of semiconductor nanostructures and their application among others for nanoLEDs, the hydrogen generation, gas sensors, thermoelectrical generators, high-temperature and nanoparticle-sensors as well as solar cells.

For further information, please contact:
Prof. Dr. Andreas Waag
Institute of Semiconductor Technology
Technische Universität Braunschweig
Hans-Sommer-Strasse 66
38106 Braunschweig
Germany
a.waag@tu-braunschweig.de
phone +49-531-391-3774 (secretary) or -3773

Dr. Elisabeth Hoffmann | idw
Further information:
http://www.tu-braunschweig.de
http://www.iht.tu-bs.de/

More articles from Power and Electrical Engineering:

nachricht Six-legged robots faster than nature-inspired gait
17.02.2017 | Ecole Polytechnique Fédérale de Lausanne

nachricht Did you know that IR heat plays a central role in the production of chocolates?
14.02.2017 | Heraeus Noblelight GmbH

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Biocompatible 3-D tracking system has potential to improve robot-assisted surgery

17.02.2017 | Medical Engineering

Real-time MRI analysis powered by supercomputers

17.02.2017 | Medical Engineering

Antibiotic effective against drug-resistant bacteria in pediatric skin infections

17.02.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>