South Korea

The record efficiency was obtained thanks to an interlayer placed between the electron-transporting layer and the perovskite layer, which eliminated the need for passivation. The cell was also able to retain around 90% of its initial efficiency after 500 hours under standard illumination.

Scientists in South Korea demonstrated a fabrication technique for perovskite solar cells relying entirely on room temperature, ambient conditions processes. Using an all-inorganic perovskite material, and a spray coated electron transport layer, cells fabricated by the group achieved a maximum efficiency of 19.75%.

South Korean company LG Chem has developed a new plastic material that it says could replace the metal frame of a PV module, making it much lighter. The company says it has already secured mass production capability for the material and begun selling products at full scale.

Singapore-based VFlowTech has secured funds to scale up manufacturing of its vanadium redox flow batteries. The company currently offers three modular products that can be scaled to multi-megawatt-hour systems.

South Korean researchers have tested four operational modes to combine residential batteries with balcony PV modules and have found that the best configuration is when solar is supplied to the load after the battery is fully charged. Charging the battery with the grid prevents the risk of full discharge in the absence of PV power, they said.

Planned to be located in Gwangju, in southwestern Korea, the new factory is expected to reach a capacity of 385 MW and to produce 550 W panels.

The $1.28 billion plan includes a 3.1 GW production capacity expansion in South Korea, where the company’s solar module capacity will reach 7.6 GW by 2025.

Developed by the Korea Institute of Energy Research (KIER), the “non-destructive” technology is claimed to enable the recovery of 100% of a module’s glass and to allow the reuse of silicon for producing new solar cells with an efficiency of 20.05%.

South Korean scientists have developed a novel coating that purportedly reduces average cell reflectance and significantly increases short-circuit current. The coating is based on aluminum oxide and indium tin oxide.

Developed by a Vietnamese-Korean research group, the complex PV device was built with a bottom bifacial crystalline silicon perovskite-filtered heterojunction sub-cell that is able to absorb all solar spectra in the short-wavelength range.