By Tina Casey •
October 25, 2009
Sharp Corporation has just announced that it has achieved the world’s highest solar cell conversion efficiency using a compound layered design based on the technology used in the solar cells that power space satellites. Mindful of the link between sustainable energy and the future market for consumer electronics, Sharp has been aggressively pursuing solar efficiency improvements that lend themselves to commercial application.
Instead of silicon, compound solar cells use two or more photo-absorption layers composed of different elements. The trick is to find materials that generate the most current with the least waste. Sharp’s innovation is a proprietary technology that enables it to produce a high-efficiency crystalline compound, InGaAs (indium-gallium-arsenide), which boosted the efficiency of Sharp’s previous cells from 31.5% to 35.8%.
By Zachary Shahan •
October 23, 2009
Solarmer Energy broke the world record for plastic cell efficiency last year. Now, they’ve just broken it again.
The new efficiency record is 7.6% and it breaks 7% for the first time.
By Zachary Shahan •
August 21, 2009
A Chinese company set a new world record in solar power efficiency this week. According to the company, Suntech Power Holdings, they achieved a 15.6% conversion efficiency on “a commercial grade multi-crystalline silicon PV module.” This breaks a 15-year-old world record set by US company Sandia National Labs.
By Tina Casey •
July 10, 2009
Dirt and reflection are no friends to thin film solar panel efficiency, and XeroCoat Inc. is on the way to solving both problems with a set of patented solar coatings that keep solar modules cleaner while cutting down on reflection. The Redwood City-based company has just won a U.S. Department of Energy grant to develop a method for applying its anti-reflective coating directly onto assembled thin film modules. A XeroCoat subsidiary is also working on a complementary coating that resists soil and dust, under a grant from the Australian government. Along with lowering production costs and boosting efficiency, the coatings could substantially reduce maintenance costs for solar energy, bringing it closer to true cost-competitiveness with coal and other non-renewable fuels.
By Susan Kraemer •
November 15, 2008
Nano-engineering students at Rensselaer have created a solar power game-changer: more than 96% absorption of sunlight from all angles, from sunrise to sunset.
The two biggest efficiency hurdles for solar efficiency have been:
1. Solar cells absorb only part of the light spectrum.
2. The sun always moves in relation to the panel.
