perovskites

Scientists at the Helmholtz Zentrum Berlin have taken back the world efficiency record for a perovskite/silicon tandem solar cell, achieving 29.15% with a device measuring 1cm². The record has been confirmed by Fraunhofer ISE, and according to HZB, this means that the 30% efficiency mark is within reach.

Researchers from the City University of Hong Kong have developed an all-inorganic perovskite cell with an electron-pair donor which offers a pair of non-bonding electrons. The cell was developed by applying that ‘Lewis base’ small molecule to passivate the inorganic perovskite film.

The device has an area of 802cm² and thickness of 2mm. The manufacturer claims it improved module performance through an inkjet coating method and a reduction in weight by using thin glass substrates.

Solar module efficiency records continue to fall. Longi claims a 22.38% efficiency world record for a PERC mono panel, while Jinko has achieved conversion efficiencies of 21.82% and 22.49% for its p-type PERC and n-type HOT bifacial panels, respectively.

NREL opened the doors as scientists spoke of advancing perovskites with fundamental research, fast drying solar inks, refining solar windows, and actively pushing into high speed, high volume manufacturing capacity on the multi-terawatt scale.

Scientists at the Massachusetts Institute of Technology have developed an accelerated process for screening new perovskite compounds as they search for those with the potential to be used in high efficiency solar cells. According to MIT, the process speeds up the synthesis and analysis of new compounds by a factor of ten and has already highlighted two sets of materials worthy of further study.

In this interview pv magazine talks with the chief research officer at the United States’ foremost clean energy laboratory about the work that NREL has been doing, and what to expect for the future of electricity and transportation.

Scientists led by Brown University have developed perovskite solar cells, which replace the toxic lead common to many of these material structures with titanium. The researchers say that with further optimization, the material could eventually be ideal for use as a tandem cell layer.

Research funded by the US Department of Energy and conducted by the University of Virginia has demonstrated how the rotation of organic molecules in hybrid organic–inorganic perovskites may expand the lifetime of photo-excited charge carriers.

Scientists at the Department of Energy’s SLAC National Accelerator Laboratory have published research revealing unusual atomic motions in perovskite materials exposed to light. Stanford says the discovery could prove crucial to further increasing the efficiency potential for perovskite solar cells.