Emiliano Bellini
Kaneka presents 29.2%-efficient 2T silicon-perovskite tandem solar cell
Kaneka’s two-terminal tandem perovskite solar cell has achieved the highest efficiency ever recorded for such a device based on an industrial Czochralski (CZ) silicon wafer. It has an open-circuit voltage of 1.929 V, a short-circuit current density of 19.5 mA cm−2, and a fill factor of 77.55%.
Scientists warn of heat-induced failure risks in HJT glass-backsheet PV modules
University of New South Wales researchers have identified four failure modes caused by damp heat in heterojunction solar panels with a glass-back sheet configuration. The failures could result in power losses ranging from 5% to 50%.
Machine learning method to identify residential PV adopters, reduce soft costs
Researchers have defined a new machine learning-based methodology that reportedly reduces customer acquisition costs by about 15% or $0.07/Watt. It is based on an adapted version of the XGBoost algorithm and considers factors such as summer bills, household income, and homeowner’s age, among others.
Toyota uses Kaneka’s 26.63%-efficient solar cells for electric vehicle
Kaneka said the cells will be utilized in the roof glass of Toyota’s Prius PHEV electric car. It plans to begin full-scale delivery of in-vehicle PV products this year.
4T silicon-perovskite PV cell hits 26.03% efficiency with transparent contact
Indian scientists have built a four-terminal silicon-perovskite solar cell that uses a top perovskite device with an efficiency of up to 17.1%. The top cell incorporates a room-temperature sputtered transparent conducting electrode (TCE) as a rear electrode.
Low-cost, portable sun-tracker for offgrid solar
Mauritian researchers have developed a solar tracker prototype that increases current by around 37%. The device uses a simplified and mechanical tracking system.
Study shows n-type bifacial TOPCon cells more prone to degradation than p-type
Dutch scientists have reported higher degradation risk for n-type TOPCon cells with EVA encapsulant due to potential moisture degradation. Front-side metallization makes n-type cells more vulnerable than p-type cells, according to damp heat tests.
Dust removal for solar panels via electrostatic cleaning
A Jordanian research team has designed a cleaning technique for solar modules that uses static electricity to remove dust from panel surfaces. The system features an electrostatic ionizer that reduces attraction between dust particles and their accumulation on modules, improving their energy yield.
PV-powered underground heat exchanger for buildings
Researchers in India have combined PV generation with heat produced by an earth-to-air heat exchanger to provide buildings with space heating and cooling. They say the proposed system could result in an annual energy gain of 8116.7 kWh.
Hybrid wind-solar power system for residential applications
Dutch startup Airturb has developed a 500 W hybrid wind-solar power system featuring a vertical axis wind turbine and a solar base hosting four 30 W solar panels. The system can be used for rooftop or off-grid applications.
