Home » Solliance hits 30.1% efficiency on perovskite/silicon tandem solar cell – pv magazine International

Solliance hits 30.1% efficiency on perovskite/silicon tandem solar cell – pv magazine International

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The Solliance consortium achieved a solar cell efficiency of 29.2% in November 2021, up from just 28.7% in March 2020. In recent months, the efficiency of perovskite cells for tandem devices has increased from 17.8% to 19.7%.

of Netherlands Agency for Applied Science Research (TNO), Delft University of Technology, Eindhoven University of Technologyand Belgian research institutes imec A power conversion efficiency of 30.1% was achieved by combining semi-transparent perovskite solar cells and crystalline silicon solar cells in a four-terminal tandem configuration.

In November 2021, the consortium will Record efficiency of 29.2% from the device’s Only 28.7% efficiency March 2020

“Although cell development will continue until the practical limits of two bonded devices are reached, it is possible to bring the technology to market and benefit from a faster learning curve to practical mass-produced devices. It is important.” Gianluca Coletti, Program Manager for Tandem PV Technology at TNO, said: pv magazine.

All research institutes Solance Consortiumwe were able to increase the overall efficiency of the cell by increasing the efficiency of the perovskite cell. TNO With TU Eindhoven and imec.

“This result was achieved by first implementing a highly transparent contact and then improving the absorber and transport layers one by one,” explains Coletti.

According to the researchers, the efficiency of the 3 mm x 3 mm perovskite cells used in the tandem cells increased from 17.8% to 19.7%, a result certified by the National Academy of Sciences. European Commission Joint Research Center (JRC) in Ispra, Italy.

“This type of solar cell has a highly transparent back contact that allows more than 93% of the near-infrared light to reach the bottom device,” said TNO researcher Mehrdad Najafi. says. “This performance was achieved by optimizing all layers of the semitransparent perovskite solar cell using advanced optical and electrical simulations as a guide for experimental work in the lab.”

Scientists create perovskite devices Silicon heterojunction (SHJ) Cells developed by Delft University of Technology.

“The silicon device is a 20×20 mm2 wide heterojunction solar cell featuring optimized surface passivation, transparent conductive oxide, and copper-plated front contacts for state-of-the-art carrier extraction.” TU Delft researcher Yifeng Zhao said.

In a recent paper, the researchers said the cell was used in a 24.5 mW/cm2 double-sided tandem mini-module with an area of ​​100 cm2 in combination with a PERC bottom cell. The panel showed a gain of 3 mW/cm2 compared to the same device with a single-sided structure. According to the scientist, outdoor results show that the module outperforms his single-sided counterparts in his 10% albedo environment by more than 25%.

Yifeng Zhao (TU-Delft), Mehrdad Najafi (TNO), Valerio Zardetto (TNO), Dong Zhang (TNO).

Image: Solance

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