Defects often limit the performance of devices such as light-emitting diodes (LEDs). The mechanisms by which defects annihilate charge carriers are well understood in materials that emit light at red or green wavelengths, ...
General Physics
Aug 7, 2023
0
74
It is something quite common in physics: Electrons leave a certain material, fly away and are then measured. Some materials emit electrons when they are irradiated with light. These electrons are called photoelectrons. In ...
Quantum Physics
Nov 19, 2020
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1618
X-rays from the Linac Coherent Light Source were used to measure the ultrafast response of DNA nucleobases to ultraviolet light. Researchers found that the UV excited state in the nucleobase thymine decays rapidly, harmlessly ...
General Physics
Jun 16, 2015
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13
Researchers working at the National Institute of Standards and Technology (NIST), the University of Maryland, and Sandia National Laboratories, have for the first time imaged the inner workings of experimental solid-state ...
Materials Science
Mar 5, 2015
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35
(PhysOrg.com) -- Double-core-hole (DCH) states – in which two electrons are ejected from their positions, creating vacancies – occurring at different atomic sites are very sensitive to the chemical environment of ...
Scientists from Helmholtz-Zentrum Berlin (HZB) observed exotic behaviour from beryllium oxide (BeO) when they bombarded it with high-speed heavy ions: After being shot in this way, the electrons in the BeO appeared "confused", ...
General Physics
Nov 3, 2010
0
0
In the world of physics, where everything tends toward disorder, researchers working on the Linac Coherent Light Source are seeking perfect order. Many experiments at the pioneering machine will require each molecule in a ...
General Physics
Oct 8, 2010
0
0
