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All-inorganic perovskite quantum dot light-emitting memories


Abstract "Field-induced ionic motions in all-inorganic CsPbBr3 perovskite quantum dots (QDs) strongly dictate not only their electro-optical characteristics but also the ultimate optoelectronic device performance. Here, we show that the functionality of a single Ag/CsPbBr3/ITO device can be actively switched on a sub-millisecond scale from a resistive random-access memory (RRAM) to a light-e... » read more

Roadmap on organic–inorganic hybrid perovskite semiconductors and devices


ABSTRACT Metal halide perovskites are the first solution processed semiconductors that can compete in their functionality with conventional semiconductors, such as silicon. Over the past several years, perovskite semiconductors have reported breakthroughs in various optoelectronic devices, such as solar cells, photodetectors, light emitting and memory devices, and so on. Until now, perovskit... » read more

Power/Performance Bits: Mar. 6


Neural network chip Neural networks are both slow and consume a lot of power. This made researchers at MIT examine the important aspects of the nodes within a neural network and to see how each part of the computation could be improved. The outcome was a dedicated chip that increases the speed of neural-network computations by three to seven times over its predecessors, while reducing power c... » read more

Power/Performance Bits: Nov. 10


Singing to your storage Existing research on 'racetrack memory', which uses tiny magnetic wires, each one hundreds of times thinner than a human hair, down which magnetic bits of data run like racing cars around a track, has focused on using either magnetic fields or electric currents to move the data bits down the wires. However, both these options create heat and reduce power efficiency. ... » read more

Power/Performance Bits: April 14


Elastic energy harvesting Researchers from the Korea Advanced Institute of Science and Technology (KAIST) and Seoul National University collaborated to develop a hyper-stretchable elastic-composite energy harvesting device. Their stretchable piezoelectric generator can harvest mechanical energy to produce a ~4V power output with around 250% elasticity and a durability over 104 cycles. The... » read more

Power/Performance Bits: Sept. 23


Improved liquid battery Researchers at MIT, led by a materials chemistry professor, have improved a proposed liquid battery system that could enable renewable energy sources to compete with conventional power plants. Professor Donald Sadoway and some colleagues have already started a company to produce electrical-grid-scale liquid batteries, with layers of molten material that automatically... » read more

Power/Performance Bits: Feb. 4


Lead halide perovskites Paving the way to the design of photovoltaic converters with improved efficiency, researchers at Ecole Polytechnique Fédérale de Lausanne (EPFL) said they have uncovered the mechanism by which solar cells based on lead iodide perovskite light-absorbing semiconductor transfer electrons along their surface. Photovoltaic systems based on lead halide perovskite are a n... » read more