Emiliano Bellini
Flexible cadmium telluride solar cell with 12.6% efficiency via lift-off method
A U.S. research team has developed a cadmium telluride (CdTe) solar cell through a lift-off method that reportedly ensures higher crystallinity of the cadmium sulfide film. The device has a power conversion efficiency of 12.60%, an open-circuit voltage of 0.829 V, a short-circuit current density of 23.64 mA/cm2, and a fill factor of 64.30%.
Lowering grid costs with voltage support from PV inverters at night
Researchers have proposed the use of solar inverters in utility-scale solar assets to replace expensive voltage compensators, in order to provide voltage support at night. They said reactive power from PV inverters could be significantly cheaper and suggested the introduction of incentives to convince PV plant owners.
Growatt unveils new inverters for residential off-grid PV systems
Growatt’s new 6 kW inverters have an efficiency rating of 93% and offer 12,000 VA of surge power, up to 500 V of input voltage, and 8 kW of PV input capacity.
Design framework for BIPV shading devices
Canadian researchers have developed a new model to improve the performance of building-integrated PV (BIPV) shades in buildings. They considered solar electricity, heat transferred through windows, and interior daylighting quality.
Longi claims world’s highest efficiency for silicon solar cells
Longi said it has achieved a 26.81% efficiency rating for an unspecified heterojunction solar cell, as confirmed by Germany’s Institute for Solar Energy Research Hamelin (ISFH).
All-perovskite tandem solar cell with 27.4% efficiency, high voltage
A U.S.-Canadian research group has built an all-perovskite tandem solar device with a record-breaking open-circuit voltage of 2.19 eV, which they achieved by reducing recombination at the electron transport layer.
Novel soiling loss measurement system for PV installations
An international research group has developed new technology to measure soiling losses in PV installations, by using a simple pocket light. They said the new system offers similar performance to their reference devices.
JinkoSolar claims 23.86% efficiency for n-type, TOPCon monocrystalline panel
JinkoSolar’s newest PV module has an efficiency rating of 23.86%. It is based on its TOPCon mono cell tech, which achieved a record efficiency of 26.1% in October, as confirmed by TÜV Rheinland.
EU raises concerns about production requirements in U.S. Inflation Reduction Act
The European Union and the United States are seeking a solution for key aspects of “discriminatory” production requirements in the US Inflation Reduction Act (IRA). The EU said it might bring the case to the World Trade Organization if a compromise cannot be reached.
Underground heat exchanger to cool down solar panels
Spanish scientists have built a cooling system featuring heat exchangers on solar panels and U-shape heat exchangers installed in a borehole at a depth of 15 meters. The researchers claim that this reduces panel temperatures by up to 17%, while improving performance by about 11%.
