The future of illumination is the "bulb" of organic
Physicist Dmitry Parashchuk talks about an urgent problem for chemists and physicists - how to create such a material that will simultaneously have semiconductor properties, will be flexible, will emit light and will live long, in a word, how to invent an effective source of light based on organic matter.
Why do we need it, well, firstly, all modern light sources are inefficient: now about 20-30% of world electricity generation is used for lighting, which means that out of these 20-30% we efficiently use only a few percent, well, and -second, such a source would allow the use of light much more diverse. Because researchers want it to be not a unit of light, but a film that could be used in any premises and for various needs.
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What this device should look like - a classic example - is a light-emitting diode. There is a film with two electrodes, one injects into this film one type of charge carrier, for example, an electron, and the second electrode — holes. These charge carriers are encountered, recombine, and as a result, a quantum of light is emitted. So electrical energy is converted into light energy. This is a classic type of device, which is made on a semiconductor diode, but recently there are new approaches that allow you to make a light-emitting transistor. That is, the transistor is a device about three electrodes, which allows using a single control electrode to control the current that passes through the transistor. It turns out that you can make a transistor that would control the current and radiate simultaneously. This concept provides a more efficient device than organic LEDs.
Such transistors will make the first organic laser electrically pumped, that is, a thin film that emits laser radiation and is powered by batteries, for example. Dmitry Parashchuk, Doctor of Physics and Mathematics, Associate Professor at the Laboratory of Photophysics of Organic Nanomaterials at the International Educational and Scientific Laser Center of Moscow State University, tells in more detail about the sources of light of the future. Mv Lomonosov.
Other materials of the author you can look at PostNauke - postnauka.ru/author/paraschuk
Why do we need it, well, firstly, all modern light sources are inefficient: now about 20-30% of world electricity generation is used for lighting, which means that out of these 20-30% we efficiently use only a few percent, well, and -second, such a source would allow the use of light much more diverse. Because researchers want it to be not a unit of light, but a film that could be used in any premises and for various needs.
')
What this device should look like - a classic example - is a light-emitting diode. There is a film with two electrodes, one injects into this film one type of charge carrier, for example, an electron, and the second electrode — holes. These charge carriers are encountered, recombine, and as a result, a quantum of light is emitted. So electrical energy is converted into light energy. This is a classic type of device, which is made on a semiconductor diode, but recently there are new approaches that allow you to make a light-emitting transistor. That is, the transistor is a device about three electrodes, which allows using a single control electrode to control the current that passes through the transistor. It turns out that you can make a transistor that would control the current and radiate simultaneously. This concept provides a more efficient device than organic LEDs.
Such transistors will make the first organic laser electrically pumped, that is, a thin film that emits laser radiation and is powered by batteries, for example. Dmitry Parashchuk, Doctor of Physics and Mathematics, Associate Professor at the Laboratory of Photophysics of Organic Nanomaterials at the International Educational and Scientific Laser Center of Moscow State University, tells in more detail about the sources of light of the future. Mv Lomonosov.
Other materials of the author you can look at PostNauke - postnauka.ru/author/paraschuk
Source: https://habr.com/ru/post/200036/
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