Very High Efficiency Solar Material Provides Unmatched Power from Indoor Light in Small Form Factors

SUNNYVALE, CA – November 21, 2013 – Alta Devices announced today that its mobile power technology produces up to 5 times more power from indoor light than other commercially available solar technologies. This means that for a given power requirement, an Alta Devices solar cell powering a wireless sensor can be 1/5 the size, and since the technology is flexible, can be integrated onto a variety of surfaces. This dramatic improvement over alternatives results from being well matched to the spectrum of indoor light and superior conversion efficiency.

Within the next 10 years, billions of sensors will be deployed throughout homes, offices, and factories to measure everything from motion and location, to temperature and humidity. Many of these sensors will require power and be as physically small as possible. Alta's technology enables the harvesting of energy from light in the smallest form factor possible, and outperforms other technologies in both sunlight and indoor lighting conditions.

This week, at the 2013 IDTechEx Energy Harvesting and Storage Exhibition, Alta Devices has been named the "Best Technical Development of Energy Harvesting". Chris Norris, Alta Devices president and CEO explained, "We are on the verge of a massive revolution in data gathering and device connectivity. Big data starts with small sensors, and many of these devices will need to be self-powered. Our technology has a small, lightweight, and flexible form factor, and its substantial power output under a wide variety of lighting conditions opens up new use cases for solar. We are honored to be recognized by IDTechEx as a leader among energy harvesting technologies."

Today, there are a variety of solar technologies used for indoor light energy harvesting. These include dye-sensitized, organic, and amorphous silicon. The typical conversion efficiencies of these technologies range from 5% to 12% under one-sun. Alta Device's mobile power technology, based on gallium arsenide, currently holds the world record for single junction, one-sun, conversion efficiency at 28.8%. For more information about Alta's technology and these applications, please visit:

About Alta Devices

Alta Devices is (EM)POWERING THE UNPLUGGED WORLD™ by delivering the world's most efficient, thin and flexible mobile power technology. Converting light into electricity, Alta's technology extends the energy source of a system, and in many cases, completely cuts the traditional power cord. The solution can be completely integrated into the final system, and is ideal for use in unmanned systems, consumer electronics, automotive, remote exploration, or anywhere size, weight, and mobility matter. Alta Devices holds world records for energy conversion efficiency1, and has received funding from, Kleiner Perkins Caufield & Byers, August Capital, Crosslink Capital, AIMCo, GE, Dow, and others. The company is headquartered in Sunnyvale, CA. For more information, visit

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