Perovskite

A Dutch and U.S. research team performed optical and electrical simulations to understand loss mechanisms in two terminal (2T) tandem cells based on perovskite and commercially available copper-indium-gallium-selenide (CIGS) cells, and subsequently established a roadmap to increase efficiency via four key modifications.

EneCoat Technologies, a Japanese solar perovskite developer, has raised JPY 5.5 billion ($35 million) from new and existing investors to finance new collaborations based on its low-temperature production process.

Hong Kong University of Science and Technology (HKUST) researchers have gained insights into perovskite microstructure. After removing grain surface concavities in the crystalline grains of perovskite, they fabricated a solar cell with improved efficiency retention under standardized thermal cycling, damp heat, and maximum-power-point tracking tests.

Singfilm Solar said the result was certified by China’s National PV Industry Measurement and Testing Center (NPVM).

A review of indoor PV cell technologies by an international research team delves into recent progress, characterization, and design strategies used to develop highly efficient cells. The study presents 250 commercial and laboratory devices, as well as applications and performance reporting.

Scientists in the United States have fabricated an all-perovskite tandem solar cell that reportedly shows reduced interfacial energy loss in the cell’s top device. It was built with a hole transport layer based on a compound known as P3CT that was doped with lead iodide.

Developed by researchers in China, the inverted perovskite device purportedly achieves the smallest nonradiative recombination-induced open-circuit voltage loss reported to date. It uses a synergistic bimolecular interlayer to functionalize the perovskite interface.

Researchers in China have built for the first time an inverted perovskite solar cell relying on a high-entropy hybrid perovskite material. The result is a device with an improved open-circuit voltage and fill factor, due to reduced non-radiative recombinations and optimized interface.

Chinese in China have utilized two sulfone-based organic molecules known as diphenylsulfone (DPS) and 4,4′-dimethyldiphenylsulfone (DMPS) to passivate absorber defects in perovskite solar cells. The result is a device with a higher electron cloud density at the interface between the perovskite material and the passivation layer.

The Saudi research institute said its new four-terminal tandem device has achieved the highest efficiency ever reported for perovskite-based 4-T and triple-junction tandem solar cells to date. The key feature of the cell is the hole transport layer of the top perovskite cell, which was engineered with self-assembled monolayers.