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A photodetector is a kind of optoelectronic device that can detect optical signals and convert them into electrical signals. These devices include photodiodes, phototransistors and photoconductors.
The emerging field of valleytronics, which exploits the momentum preference of excited electrons, or excitons, in a variety of optoelectronic devices, is closely tied to the fabrication of novel 2D materials just atoms thick. ...
For reasons of climate protection, carbon dioxide must not be released into the atmosphere. Wherever the formation of carbon dioxide cannot be prevented, it should be captured and converted into other substances.
Transistors are the building blocks of modern electronics, used in everything from televisions to laptops. As transistors have gotten smaller and more compact, so have electronics, which is why your cell phone is a super ...
Optics researchers at The University of Texas at Dallas have shown for the first time that a new method for manufacturing ultrathin semiconductors yields material in which excitons survive up to 100 times longer than in materials ...
Atomically thin semiconductors such as molybdenum disulfide and tungsten disulfide are promising materials for nanoscale photonic devices. These approximately 2D semiconductors support so-called excitons, which are bound ...
Hydrogen could be an important part of our future energy supply: It can be stored, transported and burned as needed. However, most of the hydrogen available today is a by-product of natural gas production, and this has to ...
The Environmental Protection Agency on Wednesday proposed protections for some Bristol Bay drainages, a move that—if finalized—would effectively block attempts to develop an open pit mine to extract gold, copper, silver and ...
Researchers at ETH Zurich have succeeded for the first time in trapping excitons—quasiparticles consisting of negatively charged electrons and positively charged holes—in a semiconductor material using controllable electric ...
The nanoscopic equivalent of stacking a deck of cards—layering materials a mere few atoms thick atop one another—has emerged as a favorite pastime of material scientists and electrical engineers worldwide.
