Tandem

Sunmaxx PVT and Oxford PV unveil world’s most efficient solar PVT module

Sunmaxx PVT, a German developer and manufacturer of photovoltaic-thermal solar modules, and Oxford PV, a producer of high-efficiency tandem solar cells, announced the launch of the “Solar Hammer" module. This partnership marks the first use of perovskite-on-silicon tandem solar cells in a photovoltaic thermal module, enabling a very high conversion efficiency. Both the cells and the modules are produced in Germany.

Sunmaxx PVT’s modules combine proven thermal management technology from the automotive industry with photovoltaics, leading to a total conversion efficiency of 80%, certified by Fraunhofer ISE. Oxford PV’s perovskite-on-silicon tandem solar cells have broken multiple records for conversion efficiency. In combination, these technologies enable more usable electricity and heat to be generated from the sun’s energy. The new module comes at a record efficiency of 26.6% electrical and 53.4% thermal efficiency, totaling 80% overall efficiency on aperture area level of 1.63 m2. The electrical power of the module with 6×10 M6 cells is 433 W, surpassing the previous record of Fraunhofer ISE.

Read the full story Posted: Jun 21,2024

LONGi announces new world record efficiency of 30.1% for commercial M6 size wafer-level silicon-perovskite tandem solar cells

LONGi Green Energy Technology has announced a new world record efficiency of 30.1% for a commercial M6 size wafer-level silicon-perovskite tandem solar cell at the 2024 Intersolar Europe event in Germany. This new record comes less than a week after LONGi announced a new world record of 34.6% tandem solar cell efficiency at the 2024 SNEC EXPO in Shanghai, and it also breaks the previous world record of 28.6% wafer-level tandem solar cell efficiency on M4 commercial size wafers in May 2023.

The commercial M6 size wafer-level silicon-perovskite tandem solar cell was independently certified by the Fraunhofer Institute for Solar Energy (Fraunhofer ISE) in Germany.

Read the full story Posted: Jun 20,2024

Oxford PV unveils residential solar module with record-setting 26.9% efficiency

Oxford PV has announced a record-setting 26.9% efficiency for its double-glass, 60-cell “residential sized” perovskite tandem module at the Intersolar Europe 2024 event. The module reportedly has a surface area of a little over 1.6 m square meters (1m x 1.7m) and weighs a little under 25 kg, “the ideal size for residential applications,” according to Oxford PV.

Oxford PV produces the proprietary high efficiency tandem solar cells at its manufacturing facility in Brandenburg an der Havel, Germany, and uses both in-house and contract services for the module assembly.

Read the full story Posted: Jun 19,2024

Researchers use n-Butanol to achieve efficient perovskite/silicon tandem solar cells in air

Researchers in China, led by Nanjing University, have designed a tandem perovskite-silicon solar cell with a top perovskite device based on an absorber treated with n-butanol (nBA), which reportedly reduces the detrimental effects of moisture in manufacturing processes carried out in air environment. The resulting PV device is said to have improved charge collection.

The nBA used by the team is a clear, colorless alcohol used as a cleaning agent in many industries, including electronics manufacturing. The team explained that it offers low polarity and saturation vapor pressure and ensures that the typical detrimental effects of moisture in perovskite cell fabrication in an ambient environment can be significantly reduced.

Read the full story Posted: Jun 13,2024

Swift Solar announces $27 million Series A funding round

Swift Solar has announced the close of its $27 million Series A financing round. The round was co-led by Eni Next and Fontinalis Partners. Also joining the round are new and existing investors including Stanford University, Good Growth Capital, BlueScopeX, HL Ventures, Toba Capital, Sid Sijbrandij, James Fickel, Adam Winkel, Fred Ehrsam, Jonathan Lin, and Climate Capital.

In total, Swift Solar has raised $44 million for its mission to transform the solar energy landscape with perovskite tandem solar products. Proceeds from this round will accelerate Swift Solar’s scaling of efficient and stable tandem technology as the Company prepares to break ground on its first factory. Swift Solar also plans to build a factory in the U.S. in the next two to three years to manufacture thin-film solar.

Read the full story Posted: Jun 12,2024

Researchers develop ultrathin flexible monolithic perovskite/silicon tandem solar cell

Researchers from the Ningbo Institute of Materials Technology and Engineering at the Chinese Academy of Sciences recently reported a novel perovskite/silicon tandem solar cell based on flexible ultrathin silicon, with a thickness of about 30 µm.

Despite major progress in the efficiency of rigid perovskite/silicon tandem solar cells, flexible perovskite/silicon tandem solar cells have remained elusive. The team explains that this is due to the challenge of enhancing light absorption in ultrathin silicon bottom cells while maintaining their mechanical flexibility.

Read the full story Posted: Jun 09,2024

Researchers exceed 99.5% geometrical fill factor in perovskite solar minimodules with advanced laser structuring

Researchers at CHOSE (Centre for Hybrid and Organic Solar Energy) at University of Rome ‘‘Tor Vergata’’ and Solertix (affiliated with Italy-based solar manufacturer FuturaSun) have reported reduced yield losses in cell-to-module scaling by utilizing ultranarrow interconnection of 19.5 μm. 

In addition, the proposed interconnection technique may be used to achieve a 30% efficiency in area-matched 4T tandem designs featuring a perovskite module over a silicon cell.

Read the full story Posted: Jun 06,2024

TandemPV to receive $4.7 million award from U.S. Department of Energy

TandemPV has announced that it was selected to receive a $4.7 million award from the U.S. Department of Energy (DOE) Solar Energy Technologies Office (SETO) to pursue commercialization of its thin-film solar photovoltaic technology. 

The selected project will help TandemPV prove out its pairing of conventional silicon solar with perovskite materials for panels that have the potential to be up to 40% more powerful than those used today.

Read the full story Posted: Jun 04,2024

Jinko Solar announces N-type TOPCon-based perovskite tandem solar cell with 33.24% efficiency

China-based global PV and ESS supplier, Jinko Solar, has announced a significant breakthrough in the development of its N-type TOPCon-based perovskite tandem solar cell.

Tested by the Shanghai Institute of Microsystem and Information Technology, the cell reportedly achieved an impressive conversion efficiency of 33.24%. This enhancement surpasses JinkoSolar's previous record of 32.33% for the same type of tandem cells.

Read the full story Posted: May 31,2024

Researchers develop thermal regulation strategy to improve stability and efficiency in all-perovskite tandem solar cells

Researchers at China's Qingdao University of Science and Technology and Canada's University of Toronto have developed a thermal regulation strategy by incorporating carboranes into perovskites to improve the performance of inverted tin-lead perovskite tech for all-perovskite tandem solar cells. 

The Chinese-Canadian research group has designed a monolithic all-perovskite tandem solar cell that utilizes a top inverted perovskite PV device based on an absorber made with mixed tin-lead (Sn-Pb) perovskite via the newly developed thermal regulation strategy.

Read the full story Posted: May 29,2024