On August 22, 2013, IQE plc, the global leader in semiconductor wafer manufacturing, announced that its high-volume production materials had achieved a photovoltaic cell efficiency of 44.1%, as certified by the National Renewable Energy Laboratory (NREL). This marked a significant breakthrough, surpassing the previous efficiency record held by Solar Junction's standard three-junction CPV cell.
Solar Junction, a Silicon Valley-based company specializing in high-efficiency multi-junction solar cells for concentrated photovoltaic (CPV) systems, relies on IQE’s advanced MBE tools—specifically silicon wafers—to produce its cutting-edge photovoltaic cells. The collaboration between the two companies has been key to achieving these performance milestones.
In October 2012, Solar Junction had already set a new benchmark when its cell achieved a power conversion efficiency of 44% under a sunlight intensity of 947 W/m². This surpassed their own previous record of 41.35%, set in April 2011, and both achievements were officially recognized by NREL.
Viijit Sabnis, CEO of Solar Junction, commented, “Breaking the world record is a major milestone. It reflects our strong partnership with IQE, our innovative dilute nitride technology, and the hard work of our team. We remain focused on advancing multi-junction solar cell efficiency and reducing CPV costs to deliver better value to consumers.â€
Dr. Drew Nelson, CEO of IQE, added, “The successful certification of our high-capacity 4-inch and 6-inch CPV technology marks another significant achievement for IQE. Exceeding Solar Junction’s previous efficiency record demonstrates the potential of our technology to significantly lower the total cost of solar installations and energy generation.â€
This progress highlights the ongoing innovation in renewable energy and the growing importance of partnerships between material suppliers and solar technology developers in pushing the boundaries of efficiency and affordability.
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