Press Release
Cutting-Edge Advances in Tandem Solar Cell Technology Propel Industry Forward
Several leading solar companies, including Hanwha Qcells, Trinasolar, and LONGi, have made significant strides in tandem solar cell technology, merging traditional silicon photovoltaic systems with perovskite to enhance efficiency. Despite perovskite’s lower cost, its chemical instability has posed scalability and commercialization hurdles. However, Qcells announced a breakthrough on May 14, achieving a critical stability milestone for its tandem solar cells. The company’s modules successfully passed rigorous stress tests, complying with International Electrotechnical Commission and Underwriters Laboratories standards, independently verified by TÜV Rheinland.
"This marks an industry first," noted Qcells, emphasizing the importance of these tandem-specific power measurement tests. The tandem solar cells utilize stacked layers of materials, enabling them to harvest a broader spectrum of solar energy, thereby overcoming the Shockley-Queisser limit, which restricts single-material cells to around 30% efficiency.
On March 28, Trinasolar unveiled what it claims to be the "world’s first industrial-standard solar PV module" producing over 800W, demonstrating a significant milestone in tandem module industrialization. Following that, on April 9, Trinasolar partnered with Oxford PV to license technologies focused on perovskite solar cells in China, highlighting the importance of patents in the evolving photovoltaic market.
Further pushing the boundaries, LONGi announced on April 15 that it achieved a conversion efficiency of 34.85% for its two-terminal crystalline silicon-perovskite tandem solar cell, surpassing its own previous record. These advancements collectively signal a promising future for the photovoltaic industry, as companies work to commercialize this cutting-edge technology and push for greater efficiency standards.
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