World

An international research group led by Longi Central R&D Institute has published a paper describing Longi’s heterojunction solar cell based on a full-size silicon wafer that made a sensation in November, as it beat the long-lasting efficiency record held by Japanese manufacturer Kaneka for years. The researchers attributed the cell efficiency improvement to the implementation of a p-type amorphous silicon hydrogenated layer together with a modified transparent conductive oxides contact, which they said greatly reduced the cell contact resistivity.

JinkoSolar, Long, JA Solar, and Trina Solar have all reported impressive growth figures for the first quarter of this year.

The International Renewable Energy Agency has released new data on the cost of capital for solar PV, onshore and offshore wind in the period between 2020 and 2021. Results show that Australia has the second lowest cost of capital in the Asia Pacific region at 4.6%, beaten out by China at 3.9%.

Australian researchers have developed a novel adaptive decentralised control strategy for electric vehicle (EV) integration, incorporating both microgrid and EV-side conditions into the primary frequency control. They have proposed new indices to evaluate the charge and discharge capabilities of EV batteries, as well as the satisfaction levels of EV owners.

Fraunhofer ISE scientists have optimised a technical concept for a hydrogen plant at sea. They claim that their design is “technically and economically viable.”

Dutch scientists have reported higher degradation risk for n-type TOPCon cells with EVA encapsulant due to potential moisture degradation. Front-side metallisation makes n-type cells more vulnerable than p-type cells, according to damp heat tests.

The debate continues over whether super-sized, high-power solar modules are a good thing for the industry and they appear to be here to stay. Vicente Parra and James Whittemore, from Enertis Applus+, consider the pitfalls to avoid when designing high-power solar projects.

Solis has released a new line of hybrid inverters in five different power output versions, ranging from 3 kW to 8 kW. The hybrid inverters can be used with either lithium-ion or lead-acid batteries, with a maximum charging and discharging current of 190 A.

Chinese battery industry heavyweight CATL has unveiled a novel condensed matter battery technology with an energy density of up to 500 Wh/kg. The company said it can achieve mass production within this year.

A team at Colorado State University proposes making thin-film solar cells from naturally abundant molybdenum disulfide.