Siemens has a 16-percent stake in the U.S. start-up and wants to develop the technology further. Production of the modules is scheduled to begin in mid-2012.
The record was measured under standardized test conditions in a joint project with the Spanish Instituto de Sistemas Fotovoltaicos de Concentración and the University of Madrid. Classic PV modules made of mono- or poly-crystalline silicon and without concentrating lenses currently achieve efficiency ratings of approximately 20 percent and 16 percent, respectively.
Concentrating PV modules have a glass covering with integrated lenses. The lenses focus the rays of sunlight on small surfaces, and for that reason, the photovoltaic panel does not consist entirely of semiconductor material. Instead, it is made of an inexpensive substrate to which small solar cells are attached. The high-performance concentrator modules from Semprius are based on very small solar cells and achieve a 1,000-fold concentration of the solar radiation.
They rely on a process that Semprius developed for inexpensively mounting tiny solar cells on the substrate: Instead of transferring them chip for chip, a special printing module applies up to 1,000 cells per step. The solar cells themselves are based on multiple layers of light-absorbing III-V semiconductors like gallium arsenide. This technology has already attained an efficiency rating of more than 40 percent in the laboratory.
Concentrating photovoltaic modules can only process direct sunlight and must therefore be set up to track the position of the sun. The technology is particularly suited to regions exposed to a large amount of sunlight. Compared with the solar thermal power plants likewise used in these areas, the high-performance concentrator PV modules also permit smaller units with lower outputs. As Semprius continues to develop the technology of the modules, Siemens is contributing tracking systems and inverters, among other things.
Siemens is also responsible for the design of complete solar power plants based on the new modules. Solutions for photovoltaic plants are part of the Siemens Environmental Portfolio, with which the company generated about €30 billion in sales in the fiscal year 2011.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
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19.09.2017 | DOE/Lawrence Berkeley National Laboratory
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19.09.2017 | King Abdullah University of Science & Technology (KAUST)
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems Holding GmbH about commercial use of a multi-well tissue plate for automated and reliable tissue engineering & drug testing.
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems...
Pathogenic bacteria are becoming resistant to common antibiotics to an ever increasing degree. One of the most difficult germs is Pseudomonas aeruginosa, a...
Scientists from the MPI for Chemical Energy Conversion report in the first issue of the new journal JOULE.
Cell Press has just released the first issue of Joule, a new journal dedicated to sustainable energy research. In this issue James Birrell, Olaf Rüdiger,...
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