science

Chinese scientists have developed a single-layered organic solar cell based on non-fullerene acceptors with improved fill factor and short-circuit current density. They achieved their results with a new morphology that could be more suitable for vertical charge transport.

Researchers in Italy extensively analyzed four different configurations of their proposed system to assess its potential, including under non-optimal, ‘off-design’ conditions and concluded that, for now, subsidies would still be required for the commercial production of synthetic natural gas.

An international research team has defined the operational parameters needed to design and manufacture crystalline silicon PV modules for tropical climates. The group proposed a back-junction, back-contact cell tech with a selective laser soldering technique it claims offers the best potential to yield such robust panels.

Scientists in China claim to have identified a special cathode material that could be utilized in more stable potassium-ion storage systems. According to the group, this new material could enable the development of storage systems able to retain 94% of their capacity after 2000 cycles, with 0.003% capacity fade per cycle.

A research team in the US has proposed a ‘dual-angle solar harvesting’ method it is claimed could help PV developers optimize energy yield and land use. It is claimed the method would be particularly suitable for projects in cloudier climates and at higher latitudes.

The ‘best conversion performance in the world in a dark room’ is how the developers of a new organic PV device have described it. Such cells could be used as a wireless source of energy for internet of things applications or in gadgets such as temperature-humidity and motion sensors.

Can an organic solar cell material finally be commercialized? Last year, Ubiquitous Energy claimed a world record for efficiency of a “transparent solar cell” with a “certified” 9.8% efficiency.

Researchers in Tunisia have proposed a method of determining the characteristic I-V profile of a partially shaded PV module, and to extrapolate it into a string profile.

Researchers in Germany and Belgium have discovered ‘zero point vibrations’ are responsible for performance limitations in organic solar cells. New strategies to minimize such vibration-induced voltage losses in organic PV should be investigated, say the scientists.

U.S. researchers have conducted detailed balance calculations to show the ultimate potential of underwater solar cells. According to their findings, the devices could theoretically produce useful power at up to 65% efficiency in clear waters. However, this would only be possible by using wide-band-gap semiconductors, which have not been considered for solar cells used for land-based applications because their band gaps are too large.