Perovskites

Researchers from University of Texas have used computational methods to study the formation of polarons in halide perovskites. The findings revealed topological vortices in polaron quasiparticles.

An international research team has developed a closed-loop PV cooling system that can reportedly offer 24-hour continuous operation. The system is claimed to be particularly suitable for hot and arid regions and to improve the lifespan of solar panels by up to 8.2%.

Japanese scientists built a thin-film perovskite solar cell incorporating fluorinated phosphoric acid (TPFP) into the absorber’s precursor solution. The device achieved remarkable power conversion efficiency due to effective passivation at the interface between the perovskite film and the hole transport layer.

Scientists in Finland have built a perovskite solar cell with a bio-inspired coating that reportedly improves light transmittance while providing self-cleaning properties. The film was able to improve the device efficiency by up to 6%.

Chinese researchers claim to have developed an “ultrastable” perovskite solar cell based on a two-dimensional, Dion-Jacobson phase perovskite. The device was constructed with blade coating technology and is scalable, according to its creators.

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.