Tuesday, July 23, 2024

EPFL unveils perovskite photo voltaic module with record-breaking effectivity of 23.3% – pv journal International


The photo voltaic modules are primarily based on the record-breaking 25.32%-efficient 2D/3D perovskite photo voltaic cells unveiled on the Ecole Polytechnique Fédérale de Lausanne in July 2023. The panel has an aperture space of ​​27.22 cm2, and is encapsulated in glass-glass encapsulation expertise mixed with a seal contained in the module below UV gentle.

An worldwide group of scientists led by Federal Polytechnic School of Lausanne (EPFL) of Switzerland has developed a photo voltaic panel that depends on record-breaking 25.32%-efficient 2D/3D perovskite photo voltaic cells that it unveiled in July 2023.

“Our new analysis exhibits a bigger floor space of ​​27.22 cm2, which achieves a powerful effectivity of 23.3%,” the lead creator of the analysis, Mohammad Khaja Nazeeruddin, stated. pv journal. “This brings us one step nearer to the commercialization of this groundbreaking expertise and marks a major advance in perovskite photo voltaic cells.”

In the paper “Dopant-additive synergism improves perovskite photo voltaic modules,” printed in NATURE, Nazeeruddin and his colleagues defined that the excessive effectivity of the module was achieved because of a synergistic dopant-additive mixture technique geared toward enhancing the uniformity and crystallinity of the cell absorber. They used, particularly, methylammonium chloride (MACl) as a dopant and a Lewis-basic ionic liquid referred to as 1,3-bis(cyanomethyl)imidazolium chloride ([Bcmim]Cl) as an additive.

“This technique successfully prevents the degradation of the perovskite precursor resolution (PPS), prevents the aggregation of MACl and leads to phase-homogeneous and steady perovskite movies with excessive crystallinity and fewer defects,” the analysis group said. .

The panel makes use of a 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 steel contact. The cell makes use of a 2D perovskite layer on the interface between the perovskite and the opening transport layer, which the researchers say improves charge-carrier transport/extraction whereas suppressing ion migration.

The modules are encapsulated in glass-glass encapsulation expertise that’s mixed with an edge seal of the module below UV gentle illumination.

Tested below customary lighting situations, the panels achieved an authorized effectivity of 23.30% and a stabilized effectivity of twenty-two.97% in a 27.22-cm2 aperture space. According to the analysis group, that is the best effectivity recorded for a perovskite photo voltaic module of this measurement. “In addition, the perovskite photo voltaic modules present long-term operational stability, sustaining 94.66% of the preliminary effectivity after 1,000 hours below steady one-day gentle at room temperature,” it added.

Scientists imagine that this module expertise may be transferred to large-scale manufacturing and result in the commercialization of perovskite-based photovoltaic applied sciences.

The analysis group additionally contains lecturers from the Chinese Academy of Science, the Southern University of Science and Technology, Xi’an Jiaotong University and Soochow University in China, in addition to from the Lomonosov Moscow State University in Russia, the Luxembourg Institute of Science. and Technology (LIST), Julius Maximilian University in Würzburg in Germany, and Toin University in Yokohama in Japan.

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