Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Laboratory record: new chip platform increases LED efficiency by 30%

The 30% increase in the efficiency of the diode results from improved material properties, further development of the thin-film platform and greater output efficiency – and unencapsulated chips benefit even more from the improvements. (Press picture: OSRAM)
The 30% increase in the efficiency of the diode results from improved material properties, further development of the thin-film platform and greater output efficiency – and unencapsulated chips benefit even more from the improvements. (Press picture: OSRAM)

Abstract:
Prototype of a red Golden Dragon Plus LED sets new record

Laboratory record: new chip platform increases LED efficiency by 30%

Regensburg, Germany | Posted on July 24th, 2010

Developers at OSRAM Opto Semiconductors have succeeded in increasing the efficiency of red thin-film LEDs by 30% - a new record. The latest generation of thin-film chips benefit from an optimized chip platform which has potential for further improvements. This boost in efficiency is opening up new LED applications in general illumination, in projection and in the industrial sector.

The record efficiency for an LED of 119 lm/W at an operating current of 350 mA (136 lm/W at 70mA) has been achieved by the latest generation of a red 1 mm² thin-film chip (InGaAlP). The chip is accommodated in a Golden Dragon Plus package and emits at a wavelength of 615 nm (ë dominant). At present there is no LED with higher efficiency at this wavelength. Its efficiency has been measured at 44% (49% at 70mA), and even exceeds 50% for a wavelength of 642 nm.

Higher efficiency means greater output for the same current and lower power consumption in the relevant applications. There are also new design options because fewer chips will be needed and therefore less space to produce the same brightness. In addition, almost 50% less waste heat needs to be removed, which in turn considerably reduces the need for cooling. As brightness increases, the light sources can be made smaller and smaller.

The improved performance of the LEDs greatly expands the possible applications for this innovative light source. For example, exceptionally high efficiency means that warm white LED solutions can be produced with better quality of light and a better energy balance through color mixing than through the usual conversion of blue light.

"This will benefit all applications that use high-efficiency red, particularly projection applications. We expect to start equipping LED products with the new thin-film chips in about a year's time," said Dr. Wolfgang Schmid, who is responsible for developing this chip technology at OSRAM Opto Semiconductors.

####

About OSRAM
OSRAM is part of the Industry sector of Siemens and one of the two leading lighting manufacturers in the world. Its subsidiary, OSRAM Opto Semiconductors GmbH in Regensburg (Germany), offers its customers solutions based on semiconductor technology for lighting, sensor and visualization applications. OSRAM Opto Semiconductors has production sites in Regensburg (Germany) and Penang (Malaysia). Its headquarters for North America is in Sunnyvale (USA), and for Asia in Hong Kong. OSRAM Opto Semiconductors also has sales offices throughout the world. For more information go to www.osram-os.com.

For more information, please click here

Contacts:
Mrs. Marion Reichl
Osram GmbH
Tel: +49 (941) 850 1693

Copyright © OSRAM

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

A new approach to ultrafast light pulses: Unusual fluorescent materials could be used for rapid light-based communications systems September 19th, 2017

New quantum phenomena in graphene superlattices September 18th, 2017

Do titanium dioxide particles from orthopedic implants disrupt bone repair? September 16th, 2017

Display technology/LEDs/SS Lighting/OLEDs

The power of perovskite: OIST researchers improve perovskite-based technology in the entire energy cycle, from solar cells harnessing power to LED diodes to light the screens of future electronic devices and other lighting applications August 18th, 2017

Nanocrystalline LEDs: Red, green, yellow, blue ... August 7th, 2017

Nanoparticles could spur better LEDs, invisibility cloaks July 19th, 2017

Thin films

Rice University chemists make laser-induced graphene from wood July 31st, 2017

Graduate Students from Across the Country Attend Hands-on NanoCamp: Prominent scientists Warren Oliver, Ph.D., and George Pharr, Ph.D., presented a weeklong NanoCamp for hand-picked graduate students across the United States July 26th, 2017

Studying Argon Gas Trapped in Two-Dimensional Array of Tiny "Cages": Understanding how individual atoms enter and exit the nanoporous frameworks could help scientists design new materials for gas separation and nuclear waste remediation July 17th, 2017

Possible Futures

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

A new approach to ultrafast light pulses: Unusual fluorescent materials could be used for rapid light-based communications systems September 19th, 2017

Hydrogen power moves a step closer: Physicists are developing methods of creating renewable fuel from water using quantum technology September 15th, 2017

New insights into nanocrystal growth in liquid: Understanding process that creates complex crystals important for energy applications September 14th, 2017

Nanoelectronics

Bit data goes anti-skyrmions September 1st, 2017

Ames Laboratory scientists move graphene closer to transistor applications August 30th, 2017

GLOBALFOUNDRIES Demonstrates 2.5D High-Bandwidth Memory Solution for Data Center, Networking, and Cloud Applications: Solution leverages 2.5D packaging with low-latency, high-bandwidth memory PHY built on FX-14™ ASIC design system August 9th, 2017

GLOBALFOUNDRIES, Silicon Mobility Deliver the Industry’s First Automotive FPCU to Boost Performance for Hybrid and Electric Vehicles: Silicon Mobility and GF’s 55nm LPx -enabled platform, with SST’s highly-reliable SuperFlash® memory technology, boosts automotive performance, ene August 3rd, 2017

Announcements

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

A new approach to ultrafast light pulses: Unusual fluorescent materials could be used for rapid light-based communications systems September 19th, 2017

New quantum phenomena in graphene superlattices September 18th, 2017

Do titanium dioxide particles from orthopedic implants disrupt bone repair? September 16th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project