Technology

Russian researchers have improved the efficiency of a thin-fim GaAs‐based solar cell by 0.9% by applying single‐walled carbon nanotubes as the topmost layer. The cell also showed a slight increase in the short circuit current density, from 16.9 to 17.9 mA/cm2.

French organic PV module manufacturer Armor said it began manufacturing free-form PV modules in early April. The new technology will allow the company’s ASCA PV film to be produced in a range of different shapes.

Researchers from Finland’s Lappeenranta University of Technology have assessed the economic advantages of a fully interconnected global network. They found that an international grid could contribute to a global LCOE of €52.50/MWh. The higher complexity of such a system, however, would only be marginally compensated by additional economic benefits.

Distributed generation with battery storage can revolutionize solar development in India in the shortest time period with minimal investment.

Scientists in the U.K. have developed a system which makes panels vibrate to provide cleaning. The academics have conceded, however, they are yet to calculate the ‘sweet spot’ of mechanical stress to be applied.

Indian scientists have developed a low-cost electrocatalyst based on iron, manganese and N-doped carbon derived from fish gills (Fe/Mn/N-FGC) that increased the performance of a homemade rechargeable zinc-air battery when used as the air cathode. The Fe/Mn/N-FGC cathode based battery achieved open-circuit voltage of 1.41 V and a large power density of 220 mW/cm2 at 260 mA/cm2 current density—compared to commercial platinum/carbon based battery’s 1.40 V and 158 mW/cm2—with almost stable charge-discharge voltage plateaus at high current density. 

A U.S. research group is now developing new inverters to protect solar installations from cyberattacks. The researchers also aim to create new cybersecurity standards. Professor Alan Mantooth, the group’s research coordinator, said that inverters can be shut down if they are hacked, or contribute to grid instability and result in the overcharging of batteries, while potentially creating problems that we still don’t know how to address.

Bids are invited for supply, installation and commissioning of balance-of-system (BOS) items for NTPC’s 100 MW (AC) grid-connected floating solar plant in Telangana. Bidding closes on April 27.

Researchers from Deakin University in Australia claim their battery chemistry is based on a new class of electrolyte material which carries no risk of uncontrolled thermal events and represents a viable alternative to rechargeable lithium-ion batteries.

The Rs 1,750-crore project—under the second phase of Central Public Sector Undertaking scheme—is to be developed using domestically manufactured solar cells and modules.