Innovative LED geometry could increase light output by factor of ten
July 13, 2012 // Christoph Hammerschmidt
New three-dimensional assembly of LEDs could dramatically multiply the light output compared to today's planar devices, European scientists hope. The EU research project GECCO aims at vertically oriented LEDs with much higher efficiency.
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.
The international team of the GECCO project with their partners from Madrid, Bristol, Lodz, as well as LED manufacturer Osram is working 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 - an expensive and laborious approach. The 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 significantly 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.
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 of the Braunschweig Technical University.
CoolCube circuit stacking moves to FinFET process
August 03, 2015
The CEA-Leti research laboratory at Grenoble France, has reported that its CoolCube 3D interconnect technology is suitable ...
Is NextInput next winner in Apple products?
Fraunhofer rolls security platform for cars
The Filter Wizard: When off the shelf won't do, Part 1
Butterflies help boost solar panel power by 50 per cent
Facebook unveils solar-powered Internet-beaming drone
August 03, 2015
Social networking giant Facebook (Cambridge, MA) has unveiled a full-scale version of its solar-powered drone designed to ...
Indian fab project hires former GloFo exec
OmniVision shareholders approve Seagull takeover
Ancient RF teardown: crude but effective
- Dual Phase Buck Controller Drives High Density 1.2V/60A Supply with Submilliohm DCR Sensing
- Test environment for the positioning elements of wearable devices
- Automotive Circuit Protection using Littelfuse Automotive TVS Diodes
- Top 5 Challenges for testing Today's Consumer Electronics
InterviewGlobalfoundries' CEO on why FD-SOI and why now
With its latest news Globalfoundries Inc. has not only confirmed itself as a supporter of the fully-depleted silicon-on-insulator (FD-SOI) approach to IC manufacturing but that it also thinks sufficiently ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Novelda is giving away two full XeThru Inspiration kits worth 1499 US Dollars each, for EETimes Europe's readers to experiment first hand with its XeThru technology.Based on the use of radio waves, rather than infrared, ultrasound or light, the company's X2M1000 Inspiration modules can detect presence just from the chest movement while breathing, and measure both the rate and... MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.