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Radical approach for brighter LEDs

27-Nov-2018

Scientists have discovered that semiconducting molecules with unpaired electrons, termed 'radicals' can be used to fabricate very efficient organic-light-emitting diodes (OLEDs), exploiting their quantum mechanical 'spin' property to overcome efficiency limitations for traditional, non-radical ...

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New efficiency record set for perovskite LEDs

07-Nov-2018

Researchers have set a new efficiency record for LEDs based on perovskite semiconductors, rivalling that of the best organic LEDs (OLEDs). Compared to OLEDs, which are widely used in high-end consumer electronics, the perovskite-based LEDs, developed by researchers at the University of Cambridge, ...

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Some superconductors can also carry currents of 'spin'

19-Apr-2018

Researchers have shown that certain superconductors -- materials that carry electrical current with zero resistance at very low temperatures -- can also carry currents of 'spin'. The successful combination of superconductivity and spin could lead to a revolution in high-performance computing, by ...

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Perovskite-based solar cells boosted by potassium

23-Mar-2018

A simple potassium solution could boost the efficiency of next-generation solar cells, by enabling them to convert more sunlight into electricity. An international team of researchers led by the University of Cambridge found that the addition of potassium iodide 'healed' the defects and ...

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Graphene in zero G promises success in space

19-Dec-2017

In a successful collaboration between the Graphene Flagship and the European Space Agency, experiments testing graphene for two different space-related applications have shown extremely promising results. Based on these results, the Flagship are continuing to develop graphene devices for use in ...

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Setting a time limit for ultrafast perovskite solar cells

25-Sep-2017

Researchers have quantified the astonishingly high speeds at which future solar cells would have to operate in order to stretch what are presently seen as natural limits on their energy conversion efficiency. The study, which investigated photovoltaic devices based on a type of materials called ...

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Non-toxic alternative for next-generation solar cells

21-Jul-2017

The team of researchers, from the University of Cambridge and the United States, have used theoretical and experimental methods to show how bismuth - the so-called "green element" which sits next to lead on the periodic table, could be used in low-cost solar cells. Their results suggest that ...

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Green method developed for making artificial spider silk

12-Jul-2017

A team of architects and chemists from the University of Cambridge has designed super-stretchy and strong fibres which are almost entirely composed of water, and could be used to make textiles, sensors and other materials. The fibres, which resemble miniature bungee cords as they can absorb large ...

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Leaf vein structure could hold key to extending battery life

10-Apr-2017

The natural structure found within leaves could improve the performance of everything from rechargeable batteries to high-performance gas sensors, according to an international team of scientists. The researchers have designed a porous, such as the veins of a leaf, and could make energy transfers ...

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Rotating molecules create a brighter future

04-Apr-2017

Scientists have discovered a group of materials which could pave the way for a new generation of high-efficiency lighting, solving a quandary which has inhibited the performance of display technology for decades. The development of energy saving concepts in display and lighting applications is a ...

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