Modules & Upstream Manufacturing

The single-junction cell has a conversion efficiency of only 1.4%, but its creators claim it may easily reach between 4 and 5%, when properly optimized. The device also showed a remarkable open-circuit voltage of 360 mV, which the scientists described as the highest VOC value ever reached for SnS‐based heterojunction solar cells.

The finance ministry has approved the proposal to levy the duty next year. Customs notification of the move will be issued at a later date.

Finnish scientists have developed a four-junction solar cell based on III-V semiconductor materials that is said to be able to achieve a wide spectral coverage. The cell was monolithically grown on gallium arsenide by molecular beam epitaxy (MBE).

A new model to assess the role of module temperature in PV power plant economics, developed by scientists in Saudi Arabia, finds that keeping modules cool could be an even more effective strategy to increasing energy yield than pursuing further gains in cell efficiency. The model finds that reducing module temperature by three degrees has a similar impact on energy yield to a 1% increase in conversion efficiency.

Rio Tinto plans to spend nearly $3 million on a facility in Utah to recover tellurium, a critical mineral used in solar panels.

A British-Egyptian research group has tested the use of hydrogels beads for PV module cooling. The micro-sized particles were saturated with aluminium oxide (Al2O3) water-based nanofluids and placed below the simulated PV panels. The experiment showed, according to the scientists, that the hydrogels beads were able to significantly reduce the temperature by between 17.9 and 16.3 degrees Celsius.

According to French financial newspaper Les Echos, EDF, the main shareholder of PhotoWatt, is considering closing the production in Bourgoin-Jallieu. The Auvergne-Rhône-Alpes regional council is mobilizing to save the company and announces that a regional company may acquire the module manufacturer.

PV Infolink reported a considerable increase in prices for polysilicon and wafer prices for last week. Both products saw their average price increase by over 9% compared to the previous week.

Safety when transporting solar PV modules from warehouse to job site is an ongoing issue for installers but one Australian solar company has designed and manufactured a simple yet effective racking system that helps allay those concerns. The racking system comprises an aluminum frame fitted with opposing channels into which the solar modules slide.

Scientists at Germany’s Fraunhofer ISE developed a model to simulate different setups for screen printing in solar cell metallization. The model provides a comparable ‘screen utility index’ value that can predict the usefulness of different architectures in the printing equipment in relation to the properties of a given silver paste. The approach, says Fraunhofer, will assist the PV industry in reducing the amounts of silver needed in silicon cell manufacturing.