Without heavy metals in the composition and with a luminous efficiency of 100%. As a result, out of hundrs of initially model compounds, only a few become emitters. Ls of three generations The Novosibirsk laboratory produces Ls of the third generation. They have a glow efficiency of 100% (unlike the first generation, where the glow efficiency reaches barely 25%) and do not contain heavy metals (unlike the second generation). of semiconductors in such a diode are sulfur, nitrogen, oxygen, hydrogen and carbon, that is, exclusively organic compounds, due to which the third generation has a number of advantages Cheapness.
The main elements in the structure
Iridium and other useful heavy metals are min Nigeria Phone Number List mainly abroad. In addition, are not large enough for widespread, large-scale use of organic light emitting diodes. And sulfur, carbon, oxygen, hydrogen and nitrogen can be obtain literally from natural sources, available in unlimit quantities. Environmental friendliness . Heavy metals are harmful to living organisms. But some of the synthetic blocks us to assemble the final organic emitter molecules can be isolat from natural raw materials. Resource intensity . To deposit silicon on the diode substrate, physical and chemical evaporation-spraying methods are us. And for organic compounds – solution methods.
A sensor made of organic molecules
That is after evaporation of the solvent from the BT Lists solution with the emitter, the resulting layer is immiately ready for use. It is technologically simpler, faster and cheaper. Physical flexibility . The silicon wafer breaks easily when you try to bend it. But in the form of a thin film easily takes the form of a substrate (for example, a finger). How Ls light up Novosibirsk scientists explain such an efficient extraction of light in organic semiconductors in response to an external action (current transmission) by the phenomenon of thermally activat delay fluorescence (TADF). If we imagine that electrons in atoms are a kind of currency, then there are “rich” (electron-donor.