S2K conference 2010: IQE's NanoGaN division to present paper on high efficiency LEDs

20 May 2010

Bedwyr Humphreys, General Manager of IQE's NanoGaN division will present a paper at the forthcoming annual S2K conference to be held in Cardiff from 1st to 3rd June 2010.
The paper, entitled: “Enabling high efficiency LEDs through advanced material technologies” relates to the GaN materials advancements being made at IQE's NanoGaN division based in Bath, England, UK.
"The promise of high efficiency performance and low power consumption makes LED lighting a highly attractive proposition. Today’s brightest, cold white commercial LEDs are already almost ten times more efficient than conventional incandescent bulbs, with warm white commercial LEDs almost six times more efficient.
"On the face of it, one might consider that further technology advances are irrelevant, however, efficiency is not the only driver of success. To achieve a similar lumens output as that of a 60W incandescent bulb, an equivalent solution in LEDs requires up to x11 of the most efficient warm white LEDs each operating at ~350mA per “bulb”.
"The price of such a unit is currently close to $60, which today is considered too high to encourage mass adoption. In order to accelerate the market acceptance of LED lighting, the cost per “bulb” must decrease significantly. This not only means that LED unit costs must be reduced, but LEDs must also be even more efficient and able to operate at much higher currents in order to reduce the number of LEDs used per bulb.
"This presentation will describe how advanced material technologies can be applied to radically improve the performance of today’s LEDs enabling higher efficiencies at higher currents, whilst reducing overall bulb cost."

Technical/Sales: NanoGaN (+44 29 2083 9400) Bedwyr Humphreys
Press: IQE plc (+44 29 2083 9400) Chris Meadows

Note to editors
IQE is the leading global supplier of advanced semiconductor wafers with products that cover a diverse range of applications, supported by an innovative outsourced foundry services portfolio that allows the Group to provide a 'one stop shop' for the wafer needs of the world's leading semiconductor manufacturers.
IQE uses advanced crystal growth technology (epitaxy) to manufacture and supply bespoke semiconductor wafers ('epi-wafers') to the major chip manufacturing companies, who then use these wafers to make the chips which form the key components of virtually all high technology systems. IQE is unique in being able to supply wafers using all of the leading crystal growth technology platforms.
IQE's products are found in many leading-edge consumer, communication, computing and industrial applications, including a complete range of wafer products for the wireless industry, such as mobile handsets and wireless infrastructure, Wi-Fi, WiMAX, base stations, GPS, and satellite communications; optical communications, optical storage (CD, DVD), laser optical mouse, laser printers & photocopiers, thermal imagers, leading-edge medical products, barcode, ultra high brightness LEDs, a variety of advanced silicon based systems and high efficiency concentrator photovoltaic (CPV) solar cells.
The manufacturers of these chips are increasingly seeking to outsource wafer production to specialist foundries such as IQE in order to reduce overall wafer costs and accelerate time to market.
IQE also provides bespoke R&D services to deliver customised materials for specific applications and offers specialist technical staff to manufacture to specification either at its own facilities or on the customer's own sites. The Group is also able to leverage its global purchasing volumes to reduce the cost of raw materials. In this way IQE's outsourced services, provide compelling benefits in terms of flexibility and predictability of cost, thereby significantly reducing operating risk.
IQE operates six manufacturing facilities located in Cardiff (two) and Milton Keynes in the UK; in Bethlehem, Pennsylvania and Somerset, New Jersey in the USA; and Singapore. The Group also has 11 sales offices located in major economic centres worldwide.