Semi-conductor material on the basis of furan-fenilenovy with-oligomera

On October 5, 2016 the press service of NSU announced development of organic light-emitting semiconductors.

According to the statement of NSU, the group of scientists of Novosibirsk State University, Novosibirsk Institute of Organic Chemistry (NIOC), MSU and University of Groningen (Netherlands) published results of a multidisciplinary research in the field of organic electronics - specialists first-ever grew up from solution monocrystals furan-fenilenovy with-oligomerov, having semiconductor and luminescent properties, and found out that the quantum yield of a photoluminescence for them exceeds 65%. Similar connections, creators consider, in the long term can be used for production of organic light-emitting transistors and the flexible electronic^[1].

Specialists from Group of organic materials for electronics (THUNDER) of the Novosibirsk Institute of Organic Chemistry (NIOC) and laboratory of organic optoelectronics of Novosibirsk State University (SAE "Low-dimensional Hybrid Materials"), the Institute of Physics of Semiconductors (IPS) of the Siberian Branch of the Russian Academy of Science, the International laser center MSU, the University of Groningen participated in a research (Netherlands).

Formula of BPFB, (2016)

Organic semi-conductor materials have in comparison with crystal silicon (the most widespread inorganic semiconductor used in electronics) several advantages among which — ease, variability of properties, flexibility, translucency and inexpensive production, project participants reported.

We aim to simplify process of production of devices. Inorganic semiconductors are made using difficult technologies which require high temperatures, a vacuum. Organic materials can be applied with cheaper and easy ways, for example, to print a semiconductor layer on the printer, to raise dust or use different processes of self-assembly. Unique properties of materials can promote creation of new devices, for example the flexible display which can be put or contracted into a tubule and to put in a pocket. It considerably would simplify life in certain cases. Rather dense and close packing of molecules is necessary for high mobility of charges in the semiconductor, and it most often leads to suppression of a luminescence because of what the quantum yield falls. Maxim Kazantsev, employee of laboratory of chemistry of free radicals of NSU, THUNDER of NIOH Siberian Branch of the Russian Academy of Science

In article the encore-fenilfuranbenzol (BPFB) is told about an oligomer. Specialists synthesized connection with more compact and tough furanovy fragments, grew up crystals, investigated semiconductor and optical properties, and found out - material on the basis of the received connection has bigger solubility and has high quantum yield of a photoluminescence — 65%, in comparison with 35% - at a tiofenovy analog.

Despite use of an easy and cheap way of growth of crystals, this value record-breaking for similar materials, it is comparable to parameters of the similar crystals which are grown up by more "net" method of physical steam transport. Organic light-emitting semiconductors are used as active layers of light-emitting transistors.

In displays each pixel represents a LED which is controlled one transistor. We can integrate in one device of function both managements, and light emissions. Besides, such devices in comparison with normal LEDs are more energy efficient, and in the long term can be used for creation of organic lasers with electric pumping. Maxim Kazantsev

The NIOH joint cross-disciplinary scientific group and Novosibirsk State University — one of the few in Russia which is engaged in organic electronics and capable to completely pass a way "the idea of a molecule — the ready device". We have specialists from different areas which are engaged in quantum and chemical calculations, modeling molecules and their properties, organic synthesis of the offered molecules, a research of properties of the received connections, and, of course, production and a research of devices of organic electronics. We completely close this cycle. Evgeny Mostovich, head of laboratory of organic optoelectronics of NSU and GROM

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