heterojunction solar modules

The Chinese manufacturer said the higher-voltage design of the new module reduces cable, combiner, pile-foundation, and land-use requirements, delivering balance-of-system savings of up to CNY 0.15 ($0.012)/W in western China. The module offers a power output of 730 W to 770 W and a conversion efficiency of up to 24.8%.

Risen Energy says it has achieved an average power output of 740 W for its mass-produced heterojunction (HJT) solar module, with certified cell efficiency of 26.61% and module efficiency of 24.81%, according to China’s Fujian Metrology Institute. Encapsulation losses were limited to 1.8%.

Researchers at the Delft University of Technology have developed a top-down processing method localized the front contact in heterojunction solar cells. The new technique reportedly improves a cell’s short-circuit current density enabling higher power conversion efficiency.

Researchers in China have sought to increase the efficiency of heterojunction solar cell through a buffer layer made of indium tin oxide. This innovation reportedly resulted in a 0.1% efficiency increase deriving from optimized short-circuit current density and fill factor.

A research group from France claims to have found a way to reduce indium consumption in heterojunction solar modules by 85 % while maintaining good performances and durability levels. The scientists tested different cell designs and the use of several capping layers to protect the cell from moisture degradation.

A research group in India has embedded a hybrid heterojunction solar cell as a bottom device in a four-terminal perovskite-silicon solar cell using a solution processing technique. The novel cell architecture, according to its creators, could be produced at significantly lower costs compared to conventional perovskite-silicon tandem designs.

A research team in Germany has proposed to use direct wire bonding to reduce silver consumption in heterojunction solar cells. The scientists used low-cost copper wires as electrodes with conductive paste applied in discrete pads to replace the traditional metallization and interconnection process.

NuVision Solar – a newly formed, US-owned and operated manufacturer – has revealed plans to produce heterojunction (HJT) solar cells and modules.

Pakistan-based Solar Asia said its new heterojunction product uses 210 mm cells provided by Chinese manufacturer Tongwei. The panel is designed and engineered in Germany by Sonnex Energie and is initially intended for sale in the Pakistani market.

REC has developed a new series of heterojunction solar panels with efficiencies up to 22.5% and an operating temperature coefficient of -0.24% per degree Celsius.