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.

Recent perovskite News

Novel microscopic analysis of perovskite solar cells deepens understanding of their degradation

Scientists at the Department of Energy’s National Renewable Energy Laboratory (NREL) and at the University of Texas at Austin have conducted the first quantitative nanoscale photoconductivity imaging of two perovskite thin films with different power conversion efficiencies.

MIM imaging NREL image

The team's microscopic analysis of perovskite solar cells reveals new insight into how the devices degrade—information necessary for improving their performance and moving the technology closer to commercialization.

HZB team shows how holey perovskite films manage to maintain efficiency

Researchers from Germany’s research center Helmholtz Zentrum Berlin (HZB) have found the reason why holes in perovskite films produced through a spin coating technique and used in solar cells do not cause a reduction in the cells’ performance.

HZB team shows why holes do not always harm efficiency image

The team said that these holes, which are commonly responsible for leading to short circuits in the solar cell by the adjacent layers of the solar cell coming into contact, if produced through a spin coating technique, do not lead to significant short circuits between the front and back contact of the cell, and so do not negatively impact the cell’s performance.

Saule Technologies' perovskite-based solar panels headed for commercial implementation by building company Skanska

Saule Technologies, Poland-based developer of perovskite solar cells ink-jet printed on thin foil, has announced the signing of a cooperation agreement with Skanska's commercial development business unit in Central Eastern Europe.

Saule Technologies' flexible panels image

The construction company will be the first to cover office buildings with semi-transparent perovskite solar cells on a commercial scale. Saule Technologies will be the technology provider. The initial implementation tests are planned for 2018 in Poland.

Unique tin-based perovskite solar cells sport slow 'hot electrons' that can improve solar cell efficiency

Researchers at the University of Groningen are working on a special type of solar cell that is made of organic-inorganic hybrid perovskites. The team has been focusing on a material in which hot electrons retain their high energy levels for much longer, which might make it possible to use more of their energy to obtain a higher voltage.

Most hybrid-perovskite solar cells contain lead, which is toxic. The research group recently published a paper describing 9% efficiency in a hybrid-perovskite solar cell containing tin instead of lead. "When we studied this material further, we observed something strange", the team said. The results showed that the hot electrons produced in the tin-based solar cells took about a thousand times longer than usual to dissipate their excess energy.

Oxford PV to collaborate with HZB on perovskite optimization for HJ cells

Oxford Photovoltaics announced that it was working with scientists at the new Helmholtz-Zentrum Berlin (HZB) innovation lab to further the optimization of its perovskite cell materials for silicon heterojunction solar cell technology.

The new partnership with HZB aims at furthering commercialization efforts with greater leverage of HZB’s silicon cell material knowledge and specifically heterojunction cells. “Working with HZB to understand solar cell manufacturers’ silicon cells, will allow Oxford PV’s perovskite on silicon tandem formation to be fully optimized, to ensure the most efficient tandem solar cell, and the easy transfer of our technology into our commercial partner’s industrial processes", commented Chris Case, Chief Technology Officer, at Oxford PV. “Oxford PV is now in the final stage of commercializing its perovskite photovoltaic solution, which has the potential to enable efficiency gains that will transform the economics of silicon photovoltaic technology globally.”

Duke team develops a method to create hybrid thin-film materials

Researchers at Duke University have developed a method to create otherwise unattainable (or extremely hard to create) hybrid thin-film materials. The new technique could open the door to new generations of solar cells, light-emitting diodes and photodetectors.

Duke U's RIR-MAPLE approach image

The most common perovskite used in solar energy today, methylammonium lead iodide (MAPbI3), can convert light to energy as well as today's best commercially available solar panels. This can even be done using a fraction of the material - a piece 100 times thinner than a typical silicon-based solar cell. Methylammonium lead iodide is one of the few perovskites that can be created using standard industry production techniques, though it still has issues with scalability and durability. To truly unlock the potential of perovskites, however, new manufacturing methods are needed because the mixture of organic and inorganic molecules in a complex crystalline structure can be difficult to make. Organic elements are particularly delicate, but are critical to the hybrid material's ability to absorb and emit light effectively.

EPFL team aims at standardizing perovskite aging measurements

Researchers from EPFL have produced a data-driven proposal for standardizing the measurements of perovskite solar cell stability and degradation. The work aims to create clarity and consensus in the field and overcome a major obstacle on the way to commercializing perovskite photovoltaics.

One of the greatest challenges on this road is stability: to be commercially viable, perovskite-based solar cells must be able to maintain their efficiency over time, meaning that they must not degrade significantly over 25 years of use. “As a first-order approximation, we are talking about stabilities of several years for the most stable perovskite solar cells,” says Konrad Domanksi, first author on the paper. “We still need an increase of an order of magnitude to reach the stabilities of silicon cells”.