White light emission with LEDs is achieved today by either mixing red, green and blue (RGB) LEDs or by covering monochromatic LEDs with a phosphor layer, though this method decreases the efficiency.<br><br> <strong>Technology</strong><br> This inorganic-organic hybrid LED technology uses electrical excitation in combination with Förster (fluorescent) resonant energy transfer (FRET) between the inorganic and the organic layers. The organic semiconductor can be for example a conjugated polymer based on poly(p-phenylene vinylene) especially MEH-PPV or Poly(thiophene) especially PEDOT. The advantage of this electrically pumped, combined organic-inorganic structure is the strong energetic coupling between the organic and inorganic layers, leading to highly efficient devices. With this combined inorganic-organic LED structure it is possible to achieve higher light yield and therefore a high efficiency white light LED could be fabricated. <br><br>
firstname.lastname@example.org | TechnologieAllianz e.V.
Flexible and rigid, heavy-metal free organic redox polymer batteries
09.03.2017 | TechnologieAllianz e.V.
Quat primer polymers the universal key to permanent surface functionalization
27.02.2017 | TechnologieAllianz e.V.
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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