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.
FTTH solutions for MDUs
November 26, 2014
Services that demand high quality such as IPTV, HDTV, video-on-demand, video telephony and video conferencing are gaining ...
How does a Blu-ray disc improve solar cell performance?
CEO interview: Vicor powers after higher volume applications
Wireless power receiver enables compact and efficient contactless battery charging
Advanced wheel hub drive passes extensive driving tests
CEO interview: Murata succumbs to IoT temptation
November 25, 2014
Well known for its capacitors which account for nearly a third of its total revenues, Murata has been quietly reinforcing ...
ZigBee Alliance unifies application standards for Internet of Things
Can Japan get her groove back with IoT?
Packing extra charges for those long travels
- Power Systems Design eBook
- Halogen-free options and increased performance for terminal blocks
- Wireless Power User Guide
- Secure is the New Smart
InterviewCEO interview: Vicor powers after higher volume applications
Patrizio Vinciarelli, is one of the longest serving CEOs in electronics, having founded Vicor in 1981 and led the company ever since. At Electronica he told EE Times Europe that his company is investing ...
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, Cherry is giving away five of its Energy Harvesting Evaluation kits, worth over 266 Euros each, for EETimes Europe's readers to win. Cherry's energy harvesting technology benefit mostly applications where a complex wire assembly and/or batteries would be inappropriate.
The required RF-energy is created by the mechanical actuation of the switch and the data is transmitted...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.
Most popular news
- Could magnesium battery innovation end lithium's dominance?
- From warm to cool white: colour-temperature tunable LEDs
- Li-Fi communication module wirelessly transfers data at 1-Gbps
- Rebranding the revolution: the future of IoT is embedded
- Supercapacitor innovation promises panel-powered cars in five years