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Empire wind energy projects facing local headwinds in Long Beach

Empire wind energy projects facing local headwinds in Long Beach
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Scientists Uncover Process that Stands in the Way of Making Quantum Dots Brighter

Scientists Uncover Process that Stands in the Way of Making Quantum Dots Brighter
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Stanford University , United States , Dipti Jasrasaria , Burak Guzelturk , Jennifer Dionne , John Philbin , Aaron Lindenberg , Ben Cotts , University Of California , Energy Frontier Research Center , Nature Communications , Department Of Energy , Stanford Institute For Materials , Lawrence Berkeley National Laboratory , Energy Sciences , Office Of Science , Argonne National Laboratory , National Accelerator Laboratory , Accelerator Laboratory , Stanford Institute , Berkeley National Laboratory , Eran Rabani , Frontier Research Center , Thermodynamic Limits , Coherent Light Source , Nanoscale Materials ,

Scientists uncover a process that stands in the way of making quantum dots brighter

Scientists uncover a process that stands in the way of making quantum dots brighter
Bright semiconductor nanocrystals known as quantum dots give QLED TV screens their vibrant colors. But attempts to increase the intensity of that light generate heat instead, reducing the dots’ light-producing efficiency.
A new study explains why, and the results have broad implications for developing future quantum and photonics technologies where light replaces electrons in computers and fluids in refrigerators, for example.
In a QLED TV screen, dots absorb blue light and turn it into green or red. At the low energies where TV screens operate, this conversion of light from one color to another is virtually 100% efficient. But at the higher excitation energies required for brighter screens and other technologies, the efficiency drops off sharply. Researchers had theories about why this happens, but no one had ever observed it at the atomic scale until now. ....

Stanford University , United States , Dipti Jasrasaria , Burak Guzelturk , Jennifer Dionne , John Philbin , Aaron Lindenberg , Ben Cotts , University Of California , Energy Frontier Research Center , Nature Communications , Stanford Institute For Materials , Lawrence Berkeley National Laboratory , Energy Sciences , Office Of Science , Argonne National Laboratory , Office Of Communications , Stanford Institute , Berkeley National Laboratory , Eran Rabani , Frontier Research Center , Thermodynamic Limits , Coherent Light Source , Nanoscale Materials , Stanford Nano Shared , ஸ்டான்போர்ட் பல்கலைக்கழகம் ,