This year, a project that can contribute to the solution of global challenges such as energy efficiency and climate protection is under three nominated teams.
A discovery that promises a revolution in the world of lighting technology behind the rather nondescript title “Energy-saving solid-state chemistry-new materials illuminate the world”.
Because researchers of the Munich Ludwig-Maximilians Universität (LMU) and the Philips Lumileds Development Center Aachen (LDCA) pave the way to General lighting with a breakthrough in the search for new phosphors of the trend-setting LED technology.
Results of this work are already successfully employed in many lighting applications based on LEDs. The long worldwide search could find an end quickly after an eco-friendly successor of inefficient incandescent technology.
Basis for the big step of development is the discovery of a new class of substances, the Professor Dr. Wolfgang Schnick, Chair of inorganic solid state chemistry at the Munich Ludwig-Maximilians-University(LMU) in the laboratory has produced.
They are based on ecologically safe raw materials such as Silicon and nitrogen. Europium in their structures was created by adding small amounts of the Seltenerdmetalls tests an intense orange red connection.
What fabric to use would be, was Professor Deepak initially unaware: “we have at all no phosphors searched. I even knew at this time that any anyone looking for such substances for LEDs was.”
Interdisciplinary cooperation brings breakthrough
One of the searchers was Professor Dr. Peter Schmidt, who worked for the Philips technologie GmbH in Aachen after possible new phosphors. He was in a journal the results of Schnicks work, recognized the opportunities that they offered for the lighting industry, and made contact with the LMU.
Preliminary analysis of the new nitride phosphor confirmed that he allows to produce – especially warm white light with very high lighting quality any desired light color from the light of blue LEDs with color mixing.
Thus, a crucial step was done, the led the fate of energy saving lamp to spare, which due to its low power consumption was generally welcome although consumers, but remained still unloved because their light spread not the comfort you are used by light bulbs.
The cooperation of researchers between Philips in Aachen and the LMU in Munich proved so fruitful, that more than a dozen joint patents were filed.
The first products using the new materials came onto the market in 2007. Meanwhile, Philips offers a range of appropriate LED light sources. Among them are so-called retrofit LED lamps by Philips with E27 socket which are indistinguishable in outwardly almost indistinguishable from ordinary light bulbs and produce high quality warm white light with very good color rendition.
They consume 80% less electrical energy however and have a lifespan of up to 25,000 hours.This corresponds to an average, household Burns for three hours a day a service life of about 25 years.
In the face of such values, Peter Schmidt has no doubt that the future belongs to the LED technology: “Thanks to their excellent lighting quality, which is important in particular for the pleasantly warm white interior lighting in the living room, these light sources can replace classic bulbs completely.”
Other successful products are already based on the phosphors developed in Munich and Aachen, are such as the currently most efficient yellow orange LED (LUXEON pc amber), which is used among others in the automotive industry or in color controllable lamps, or the currently most efficient white high-power LEDs from Philips Lumileds (LUXEON TX).
Global energy consumption for lighting can-zu to be 60 percent less
The positive effects that the nationwide change would bring to the new technology, are enormous.According to current estimates by Philips up to 60 percent of the world’s consumed electric energy for lighting could be saved would replace conventional sources of light with the LED products and intelligent lighting control solutions.
The electricity consumption of the production of all German nuclear power plants in the year 2012 at the net would be equivalent in Germany alone. Also on the industrial Nations also are highly interesting prospects due to the efficiency of the LEDs. In many countries, there are still areas where no mains available stands. Philips already involved in pilot projects with battery-operated LED light sources, which are powered by photovoltaic. Off-grid lighting allows reading and writing, for example students and leads to a significant improvement in the prospects for the future.
The nomination for the German future prize is the reward for the contribution, which the professors Dr. Wolfgang Schnick and have made Dr. Peter Schmidt with their employees to a revolutionary upheaval of the lighting market.
She’s by no means a final point, because the possibilities opened up by the newly developed material class, are from exhausted. So is worked in Aachen on even more efficient solutions, with the aim to reduce the number of LEDs per light and thus to reduce the price of LED products.This will help to convince the consumer of a faster transition to LED technology.
The Lumileds Development Center, in the basic research in the development of specific future products flows, Philips underlines his claim to go forward as a trendsetter in the lighting sector with important innovations. In Aachen is working on solutions to global problems. Dr. Peter Schmidt: “we invest heavily in research. Not by chance is that we research here in Germany and develop, because we-see LMU – have excellent basic research in the field of material and highly trained scientists.”