Technology

Scientists in Germany investigated various routes to optimizing cell design for perovskite-silicon tandem products. Beyond the perovskite layer itself, they note several other areas that should be optimized for tandem cells, taking silicon heterojunction processing as a starting point. The research identifies several routes to cut costs in cell production, including a significant reduction in indium consumption.

The Japanese manufacturer decided to close its CIS module production in October and has now launched its first 250 W monocrystalline product for the residential market.

Through the inventory, an international group of researchers was able to identify 68,661 PV facilities, totaling 423 GW across 31 countries. According to the scientists, the online database provides insight into global trends for PV siting decisions, as well as into the gap between facility-level final investment decisions, construction start dates, construction completion dates and facility operations.

The Solliance consortium has built a solar cell in a four-terminal tandem configuration that combines a 17.8%-efficient highly near-infrared transparent perovskite cell with a prototype of an 11.4%-efficient c-Si interdigitated back contact silicon heterojunction cell developed by Panasonic.

H2X, a hydrogen vehicle manufacturer, has announced a deal with Gippsland Circular Economy Precinct in Australia to make a range of hydrogen-focused products. The move comes less than a week after Pure Hydrogen bought a significant stake in H2X Global.

UK research firm Wood Mackenzie reports that Northeast Asia and Europe are expected to become the main hydrogen importers, accounting for 55% of seaborne hydrogen trade, whereas Australia, the Middle East and, possibly, Russia and the U.S. have the greatest export potential. Plug Power and Lhyfe closed a deal to build green hydrogen generation plants throughout Europe.

Scientists in the United States theorized that a new allotrope of silicon – the same element arranged into a different atomic structure – could show greatly improved photovoltaic performance compared to that used in today’s solar cells. The allotrope, Si22, could also have important properties for use in quantum computing, carbon sequestration and other applications – though fabrication and actual physical testing of the material will be needed to back up the theoretical findings presented so far.

An Indian research group has used three different chemicals instead of commonly used hydrofluoric acid to separate silicon from the cell. The technique is claimed to be able to deliver recycled silicon with a purity of up to 99.9984%.

The Indian authorities have opened global bids to set up advanced-chemistry battery cell manufacturing units in India under the production-linked incentive scheme. Applications are open until Dec. 31, but bidders must commit to setting up a minimum of 5 GWh of capacity to qualify for the government subsidy.

A growing share of residential solar projects now attach energy storage batteries. In part one of this new series, we consider the backup power feature of batteries.