Panasonic developed a 20cm by 20cm perovskite solar cell. Panels made of these cells can be joined together to create sheets large enough for commercial uses. The company hopes to increase the cells' power generation efficiency to 20%; they are now slightly more than halfway there.
Perovskite-Info: the perovskite experts
Perovskite-Info is a news hub and knowledge center born out of keen interest in the wide range of perovskite materials.
Perovskites are a class of materials that share a similar structure, which display a myriad of exciting properties like superconductivity, magnetoresistance and more. These easily synthesized materials are considered the future of solar cells, as their distinctive structure makes them perfect for enabling low-cost, efficient photovoltaics. They are also predicted to play a role in next-gen electric vehicle batteries, sensors, lasers and much more.
Researchers at Cornell used theoretical techniques to predict that using intense mid-infrared laser light on a titanium perovskite can dynamically induce a magnetic phase transition – taking the material from its ferromagnetic ground state to a hidden anti-ferromagnetic phase. This dramatic shift could have useful applications, particularly in optical information processing.
“It would be a kind of optical switch,” the researchers said. “You have a material where it’s magnetic and ‘non-magnetic.’ It’s going between those two states with light”.
UK-based Ossila provides components, equipment and materials to enable faster and smarter organic electronics research and discovery. Ossila provides both materials and equipment for perovskite researchers, and the company's lead perovskite scientist, Dr. Jonathan Griffin, was kind enough to answer a few questions we had for him.
Dr. Griffin holds nearly a decade of experience working in organic photovoltaic research and over 5 years of working with perovskites. At Ossila, Jonathan works on technical support for several material ranges, including perovskites, organic photovoltaics, graphene and other 2-D materials. He is also involved in the development of new test equipment and product ranges. Prior to this, he worked in a postdoctoral research position at the University of Sheffield.
Q: Thank you for your time Dr. Griffin. Can you detail for us Ossila's perovskite product range in general?
University of Alberta scientists have found calcium silicate perovskite at Earth's surface. "Nobody has ever managed to keep this mineral stable at the Earth's surface," said Graham Pearson, a professor in the University of Alberta's Department of Earth and Atmospheric Sciences and Canada Excellence Research Chair Laureate. He explained the mineral is found deep inside Earth's mantle, at 700 kilometers.
"The only possible way of preserving this mineral at the Earth's surface is when it's trapped in an unyielding container like a diamond," he explained. "Based on our findings, there could be as much as zetta tonnes (1021) of this perovskite in deep Earth".
Oxford PV has announced it has moved its UK-based headquarters and R&D facilities to a new location in Oxford, UK. The new site consolidates and strengthens Oxford PV’s UK-based perovskite photovoltaic research and development activities, by providing a larger, controlled laboratory environment, with ample space for expansion of its equipment and expertise in the future.
Oxford PV’s experienced research and development team at the site will continue to focus on advancing its perovskite photovoltaic technology. Additionally, Oxford PV’s UK team will continue to support the transfer of its advanced lab based perovskite on silicon tandem solar cell technology to industrial scale processes and equipment, an activity that takes place at the company’s pilot line, in Brandenburg an der Havel, Germany, in close collaboration with its joint development partner – a major manufacturer of silicon solar cells and modules.
University of Tokyo team's investigation of perovskite structures may lead to improvement of solar cell performance
University of Tokyo researchers have studies the structure of organometal halide perovskites, a ubiquitous class of solar cells and came up with interesting results.
Dr. Tae Woong Kim: “Until now, it has been believed each crystal phase of the perovskite solely exists at its given temperature range. However, in this research, we revealed their crystal phases coexist at room temperature and the coexistence induces self-organized superlattice structure. These evidences overturn the conventional theory. Especially, the existence of the spontaneous superlattice will maximize their potential for wide and diverse applications.”
In a work supported by the Department of Energy (DOE) and Office of Science, Basic Energy Sciences (BES), researchers from Stanford, University Pennsylvania, SLAC National Accelerator Lab, Columbia University, Carnegie Institute for Science in Washington and Weizmann Institute of Science in Israel, have shown how atoms in perovskites respond to light and could explain the high efficiency of these perovskite-based solar cells.
The team explains that sunlight causes large changes to the underlying network of atoms that make up perovskites. Before being hit with light, six iodine atoms rest around a lead atom. Within 10 trillionths of a second after being hit with light, the iodine atoms whirl around each lead atom. These first atomic steps distort the structure and result in significant changes. Furthermore, the atoms’ motions alters the way electricity flows and may help explain the efficiency of perovskites in solar cells.