U.S. scientists build copper-contacted TOPCon solar cell with 24.3% efficiency
The TOPCon solar cells fabricated with screen-printed, fire-through copper rear contacts and silver front contacts, using laser-enhanced contact optimization (LECO) to significantly reduce contact resistivity. Optimized copper cells achieved 24.3% efficiency, comparable to Ag-contacted cells, with excellent stability.
Guidelines to assess three-terminal, four-terminal tandem solar cell performance
Researchers in the U.S. have developed a set of guidelines and protocols to assess the performance of three-terminal (3-T) and four-terminal (4-T) tandem solar cells, including those with subcells made of III–V, CdTe, perovskites or silicon materials.
New framework quantifies solar land use with unprecedented detail
The research reached a surprising conclusion that dual-axis solar tracker systems are more land-intensive per kW than single-axis trackers or fixed-tilt systems. The study’s data-driven approach highlights key efficiency metrics and siting opportunities, including agrivoltaics and brownfield development, for sustainable solar expansion.
Research finds solar can support bird, bat activities
A pair of research studies led by the Argonne National Laboratory have demonstrated how “ecovoltaic” installations in the midwestern United States are home to more bird and bat activities than nearby fields used for agriculture.
PV-powered transportation system for 15-minute cities
A Canadian research team has developed a framework for local urban agriculture production, with the produce harvested distributed by electric vehicles powered by sidewalk-integrated photovoltaics. The PV-powered transportation system was calculated to have a payback time of 2.8 years.
Researchers envision a ‘bright harvest’ from space-based solar power
Developers say space-based solar will be cost-competitive with utility-scale PV. A new documentary showcases a Caltech team’s efforts to supply the Earth with limitless energy from space.
Researchers discover photovoltaic properties in zinc-based film
Research from the University of Wisconsin-Milwaukee has found zinc-phosphate-hydrate (ZPH) films are capable of producing electricity from light. The coating’s photovoltage was amplified when anthocyanin, a natural dye found in blackberries, was added.
Why do some cities have higher low-income solar adoption rates than others?
After studying low- and moderate-income solar adoption for years, Lawrence Berkely Laboratory drilled down on three cities and captured why solar equity requires looking beyond numbers alone.
Scientists boost organic solar cell efficiency using polymer zwitterions
A research team based in China and the United States has developed electroactive polymer zwitterions to modify zinc oxide interlayers in organic solar cells. Their work was found to passivate defects in organic solar cells, helping to improve device performance and stability.
New deep learning tech for PV inverter fault diagnosis
A team of scientists at Georgia Southern University has combined both spatial and temporal attention mechanisms to develop a new approach for PV inverter fault detection. Training the new method on a dataset created in MATLAB/Simulink, the group has compared it to a series of other data-driven and statistical-based methods and has found accuracy reached 97.35%.
