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Dr. Kyle Bushick and Professor Emmanouil Kioupakis present a consistent first-principles methodology to study both direct and phonon-assisted Auger-Meitner recombination (AMR) in indirect-gap semiconductors that we apply to investigate the microscopic origin of AMR processes in silicon. Their results are in excellent agreement with experimental measurements and show that phonon-assisted contributions dominate the recombination rate in both n-type and p-type silicon, demonstrating the critical role of phonons in enabling AMR. They also decompose the overall rates into contributions from specific phonons and electronic valleys to further elucidate the microscopic origins of AMR. Their results highlight potential pathways to modify the AMR rate in silicon via strain engineering. ....
Designing More Efficient Silicon Devices: New Guide miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.
The performance of devices like light-emitting diodes (LEDs) has been frequently limited by defects. The mechanisms by which defects eliminate charge carriers are clearly understood in materials that liberate light at red or green wavelengths. ....
Crucial Role of Auger-Meitner Effect in Electron Energy Loss Uncovered miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.