Researchers design an ecofriendly and low-cost method for fabricating high performance perovskite photodetectors

Perovskites have shown potential for use as high performance photodetectors, where the responsivity and detectivity of the perovskite photodetector (PePDs) can be improved by engineering its interfacial properties. Researchers from the University of Electronic Science and Technology of China (UESTC) and City University of Hong Kong have reported the applications of bio-inspired materials, deoxyribonucleic acid (DNA) and guanine, as functional interfacial layers for high performance PePDs.

The schematic diagram of the PePD image

The best bio-material modified PePDs exhibit a ∼2× enhancement of the photo-current than that of the reference PePDs with no modifications. Further optimization of the thickness for the bio-materials based functional layers enables the PePD to achieve a remarkable responsivity of 0.37 A W−1 and detectivity of 1.85 × 1012 Jones at the wavelength of 745 nm.

New "Capitano" project aims to develop CIGS-perovskite tandem cells

German university the Karlsruhe Institute of Technology (KIT), the Center for Solar Energy and Hydrogen Research Baden-Würtetemburg (ZSW) and CIGS module manufacturer Nice Solar Energy have announced an ambition to design tandem PV modules based on CIGS and perovskite, which can theoretically achieve efficiencies well above 30%.

The joint ‘Capitano’ project will run for three years and has received more than €5 million from Germany’s Federal Ministry for Economic Affairs and Energy. The aim of the project is to develop cells with stable higher efficiencies, which can be interconnected to form efficient tandem solar modules.

New perovskite-based strategy may usher in next-generation solid-state Li batteries

Researchers led by Prof. MA Cheng from the University of Science and Technology of China (USTC) have proposed a perovskite-based strategy to address the electrode-electrolyte contact issue that is limiting the development of next-generation solid-state Li batteries. The solid-solid composite electrode created this way reportedly exhibited exceptional capacities and rate performances.

Replacing the organic liquid electrolyte in conventional Li-ion batteries with solid electrolytes can greatly alleviate the safety issues, and potentially break the "glass ceiling" for energy density improvement. However, mainstream electrode materials are also solids. Since the contact between two solids is nearly impossible to be as tight as that between solid and liquid, at present the batteries based on solid electrolytes typically exhibit poor electrode-electrolyte contact and unsatisfactory full-cell performances.

Researchers create a perovskite-based nickel oxide material that shows signs of superconductivity

Researchers at the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University have created a nickel oxide material that shows signs of superconductivity.

Also known as a nickelate, it’s the first in a potential new family of unconventional superconductors that’s very similar to the copper oxides, or cuprates, whose discovery in 1986 raised hopes that superconductors could someday operate at close to room temperature and revolutionize electronic devices, power transmission and other technologies. Those similarities make scientists wonder if nickelates could also superconduct at relatively high temperatures.

ANU team announces 21.6% efficiency for their perovskite solar cells

Researchers from the Australian National University (ANU) have reportedly broken new ground in solar cell energy efficiency and in the process provided a glimpse of the technology’s future. The researchers have a announced a record of 21.6% efficiency, which they say is the highest achieved for perovskite cells above a certain size.

Associate Professor Thomas White says as a comparison, typical solar panels being installed on rooftops right now have efficiencies of 17-18%. “There are three things you’re trying to achieve with solar cells, you’re trying to make them efficient, stable and cheap," he said. "Perovskites are the future of solar cells."