News Article

Emcore's GaAs Cells Launched In Final Space Shuttle Mission

The large-area 33% efficient gallium arsenide based solar cells are used in the Atlantis shuttle, which has been released into low-earth orbit.

A pair of Emcore Inverted Metamorphic Module Quadruple-Junction (IMM4J) solar cells were carried on a platform from the Space Shuttle Atlantis' cargo bay on July 20, 2011 after Atlantis undocked from the International Space Station during its historic final mission.

Emcore says its IMM4J large-area solar cells, with solar-to-electric conversion efficiencies in excess of 33%, are amongst the highest efficiency solar cells ever launched into space. The IMM4J solar cell technology, which is currently under development, has also demonstrated a laboratory world record conversion efficiency of greater than 36%, measured under simulated space solar illumination conditions at Emcore.

"The on-orbit data from these cells provides an invaluable opportunity for Emcore to assess the performance of our latest solar cell technologies under space flight conditions," said Christopher Larocca, Chief Operating Officer of Emcore. "We are also very proud to make a contribution to the final mission of the Space Shuttle program."

Emcore is one of the world's largest manufacturers of highly efficient radiation-hard solar cells for space power applications. With a beginning-of-life conversion efficiency in the order of 30% and the option for a patented, onboard monolithic bypass diode, Emcore's multi-junction solar cells can provide extremely high powers to interplanetary spacecrafts and earth orbiting satellites.
CS International to return to Brussels – bigger and better than ever!

The leading global compound semiconductor conference and exhibition will once again bring together key players from across the value chain for two-days of strategic technical sessions, dynamic talks and unrivalled networking opportunities.

Join us face-to-face between 28th – 29th June 2022

  • View the agenda.
  • 3 for the price of 1. Register your place and gain complementary access to TWO FURTHER industry leading conferences: PIC International and SSI International.
  • Email  or call +44 (0)24 7671 8970 for more details.

*90% of exhibition space has gone - book your booth before it’s too late!


Search the news archive

To close this popup you can press escape or click the close icon.
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.

Please subscribe me to:


You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
Live Event