Solar Technology & PV R&D News

Hybrid organic-inorganic perovskites have garnered significant interest in the solar cell community in light of their excellent optoelectronic properties and low manufacturing cost. Meanwhile, in efforts to produce perovskite solar cells (PSCs) with yet higher efficiencies, considerable steps have been made in developing monolithic tandem solar cells.

Scientists at the United States Pacific Northwest National Laboratory have discovered a root cause of dendrite formation, which can cause battery failure and even fires in lithium-ion technology. With this new knowledge, the group is now working on electrolyte recipes that eliminate dendrite growth entirely.

Scientists at Singapore’s Agency for Science, Technology and Research have developed a new method to produce lithium-sulfur based cathodes which exhibit stable performance and high storage capacity over 200 cycles. According to the agency, this represents “a promising step towards the commercialization of lithium-sulfur batteries.”

Scientists at Germany’s Karlsruhe Institute of Technology have developed a new class of electrolytes they say could bring calcium batteries – currently only a lab technology – a step closer to being a practical reality for energy storage.

The EU’s Joint Research Center has created a comprehensive dataset to characterize the solar energy potential in the bloc’s 28 member states. The data shows even a 100-fold increase from current solar capacity would require a very limited amount of land – a lot less than wind power.

American John B. Goodenough, Brit Stanley Whittingham and Akira Yoshino, from Japan, have received the Nobel Prize for Chemistry for developing the lithium-ion battery. A statement from the Royal Academy of Sciences of Sweden said the invention “laid the foundations of a society without wires and fossil fuels, and [they] are of great benefit to humanity”.

The Consortium for Battery Innovation has outlined research goals for advanced lead-based battery concepts, claiming the potential of the technology is “nowhere near fully exploited”. The group, comprised of lead-battery industry stakeholders, says such devices can play an important role alongside lithium-ion and other storage technologies in electric vehicles, renewable energy storage and other applications.

A group of scientists at Netherlands based research institute AMOLF have discovered a method for electrochemical printing at the nanoscale. With further optimizations, the group theorizes, the technique could allow for the development of new, three dimensional solar cells.

Scientists at the University of Texas have made a discovery they say has “altered the understanding of the fundamental properties of perovskite crystals”. Their findings could improve understanding of defect formation in perovskites, leading to devices with enhanced performance and stability.

Researchers from Canada have unveiled a new germanium deposition process which is said to eliminate threading dislocations and be significantly cheaper than previous approaches. The scientists say their technique creates nanovoids on the surface of the germanium layer which can attract and annihilate undesirable dislocations.

Research led by University of Texas at Dallas physicists has altered the understanding of the fundamental properties of perovskite crystals, a class of materials with great potential as solar cells and light emitters.

A new study shows that solar may help reduce water pumping costs in a desert oasis of Mauritania by more than 300%, while also considerably reducing water losses. The researchers claim that PV water pumping may also help prevent the desertification of these areas.

An Italian research team has developed a device that it says can easily be integrated into a PV cell, and can boost its efficiency by converting more light particles into a high energy state before they are absorbed by the cell. The scientists claim that their innovation could offer a green‐to‐blue photon upconversion yield as high as 15%.

Cesium lead black perovskites could be interesting for solar cell development if their crystals are observed in their less efficient but more stable beta phase. The efficiency shortfall can be solved by healing emerging cracks in the surface of the cell using a choline iodide solution, according to an international team of scientists.

With the Chinese manufacturer claiming it has already hit 16% conversion efficiency on a large panel, a recent perovskite conference heard predictions the technology will make up the next generation of PV cells – provided it avoids the pitfalls experienced by thin-film devices.