A simple structural tweak has dramatically enhanced the colour clarity and stability of heavy metal-free blue quantum dots.

Peanut butter and jelly. Simon and Garfunkel. Semiconductors and bacteria. Some combinations are more durable than others. In ...

“Instead of emitting a photon from an injected electron, we inject a photon and watch how the electrons are injected from the illuminated ... imaging microscopy with two-photon excitation on a cadmium ...

However, their overall performance, particularly for those emitting blue light, still lags behind that of quantum-dot-based LEDs (QLEDs) made using the heavy metal cadmium. Quantum dots made with ...

Like mercury, cadmium, and other heavy-metal ions ... For comparison, beta-particles (electrons) are capable of penetrating about a centimetre of tissue, while gamma-radiation (high energy photons) ...

A team of scientists in South Korea has made a big step forward in creating better solar cells that are safer for the ...

Some things just work better in pairs—like peanut butter and jelly, or famous duos like Simon and Garfunkel. Now, scientists ...

(20) A research found that phytoremediation decreased the bioavailable cadmium and zinc concentrations in soil ... an energy metabolic process that involves the transfer of electrons from ...

It consists of bare- and cadmium-covered indium foils ... dosimetry utilizes a commercially available amino-acid pellet that has radiation-induced unpaired electrons-stable radicals that have been ...

Nickel-cadmium batteries: known for their reliability ... which electricity enters or leaves a component in a circuit. Electrons flow out of the anode in a circuit when conventional current ...

However, creating stable and efficient blue QLEDs without toxic materials like cadmium had until now been a major challenge. “Our research team has developed a new type of quantum dot that matches or ...