Source of Picture www.inhabitat.org
Solar panels in the market now only have an efficiency of up to 15% at the maximum, most are between10-12% normally. That means only 10-12% of the sun light is being utilized now. Scientists have been working hard to find a way to increase the efficiency by shaping the panels differently, using mirrors etc… Now RoseStreet Labs has managed to increase the efficiency 3 fold! They have created a solar cell which uses 3 different layers of Photo Voltaic cells in a single layer thin-film solar panel to capture different spectrum’s of the Sun’s radiation.
RoseStreet Labs Energy Inc.(RSLE) had this to say in a press release dated Sept 29th 2009 “RoseStreet Labs Energy, Inc. (RSLE) announced today a breakthrough demonstration of the first known Nitride/silicon tandem solar cell. Utilizing the same Nitride material technology as solid state lighting and blue lasers, RSLE fabricated and tested a working photovoltaic cell that couples a silicon solar cell with a Nitride Thin Film. This is a major milestone in RSLE’s product roadmap to achieve substantially higher solar efficiencies than standard silicon or other thin film solar cells.”
They used their IBand technology to achieve this new development and are the first to do so. The idea of integrating three bands — each band capturing a different part of the spectrum — has been around for a while but this is the first proven success. RSLE’s demonstration device was fabricated on high volume CVD technology, validating the potential for high volume commercialization. The company says this technology illustrates great promise for high efficiency thin film solar efficiencies above 35% by potentially capturing the full spectrum of the sun’s spectrum.
Read the first Press Release by RoseStreet Labs Here
An Interesting read about Thin Film Solar: