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    Home»Solar»2D/3D perovksite solar cell with record-breaking efficiency of 25.32% – pv magazine International
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    2D/3D perovksite solar cell with record-breaking efficiency of 25.32% – pv magazine International

    By July 17, 2023No Comments3 Mins Read
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    A Chinese language-Swiss analysis group has developed a 2D-3D perovskite photo voltaic cell with a world-record energy conversion effectivity. The cell makes use of a 2D perovskite layer on the interface between the perovskite and the outlet transport layer, which the researchers say improves charge-carrier transport/extraction whereas stopping ion migration.

    July 17, 2023 Emiliano Bellini

    A global group of scientists led by Federal Polytechnic College of Lausanne (EPFL) in Switzerland developed a perovskite photo voltaic cell with a 2D/3D heterojunction structure.

    “The cell can be utilized for all standard PV methods, in addition to for solar-integrated photo voltaic (VIPV) and building-integrated photovoltaics (BIPV),” stated corresponding creator of the analysis, Ding Yong. pv journal.

    The cell makes use of a 2D perovskite layer on the interface between the perovskite and the outlet transport layer, which the researchers say improves charge-carrier transport/extraction whereas suppressing ion migration. Cells with this structure usually exhibit giant exciton binding energies and it are sometimes extra secure than standard 3D gadgets as a result of safety supplied by natural ligands.

    “The interlaminar molecules of 2D perovskites successfully saturate the 3D perovskite floor to scale back floor defects in the course of the manufacturing course of, resulting in the formation of a possible power offset for field-effect passivation, ” the scientists say.

    The group constructed the cell with a substrate manufactured from tin oxide (FTO), an electron transport layer manufactured from titanium oxide (TiO2) and tin(IV) oxide (SnO2), a 3D perovskite layer, a 2D perovskite layer, a spiro-OMeTAD gap transport layer, and a gold (Au)-based metallic contact.

    To create the 2D perovskite absorber, the teachers used a precursor generally known as n-butylammonium iodide (BAI), which they declare can elevate the activation power of the layer to 0.52 eV. “This enhance is mostly attributed to the bigger migration power as a result of giant distance between the interlayer spacings of the 2D perovskite,” they additional defined.

    Examined beneath customary illumination situations, the cell achieved an influence conversion effectivity of 25.32%, an open-circuit voltage of 1.159 V, and a fill issue of 83.9%. For comparability, a reference machine with out the 2D layer achieved an effectivity of 23.02%, an open-circuit voltage of 1.120 V, and a fill issue of 78.9%.

    “The effectivity worth of 25.32% obtained is record-breaking for 2D/3D perovskite-based perovskite photo voltaic cells,” the group stated, noting that the machine was additionally in a position to retain 90% of the preliminary its worth after 2000 h of operation.

    Utilizing this cell, the scientists additionally constructed a mini module that achieved an effectivity of 21.39%, an open circuit voltage of 9.416 V, and a fill issue of 80.3%. “We imagine these modules can obtain effectivity of round 23%,” Yong stated. “Their industrial manufacturing could be anticipated in three years. We estimate the price of the cells at $0.02/kWh, and the power payback interval is 6 months.”

    The cell know-how is launched within the paper “Visualizing Interfacial Power Offset and Defects in Environment friendly 2D/3D Heterojunction Perovskite Photo voltaic Cells and Modules,” revealed in Superior Supplies. The analysis group was additionally fashioned by scientists from the Chinese language Academy of Science (CAS) and the Peking College in China.

    This content material is protected by copyright and will not be reused. If you wish to cooperate with us and wish to reuse a few of our content material, please contact: editors@pv-magazine.com.

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