Researchers at Lomonosov Moscow State University (MSU) and the Institute of Polymer Research in Dresden have discovered a molecule they say could stimulate the development of organic electronics.
They say the molecule, derived from -radialene, can be used to produce organic semiconductors.
MSU's Dmitry Ivanov says the molecule will make a key contribution to the manufacture of organic light-emitting diodes and new classes of organic solar cells that are less costly than silicon-based modules.
The molecule the research focused on is a dopant, which can significantly boost the electrical conductivity of a semiconducting polymer. "We decided to design a completely new type of low molecular weight dopant for the organic semiconductor," Ivanov says. "And here it was important to choose a molecule that it was not only suitable in its energy levels, but...the dopant must be well mixed with the polymer, so that in contact with the polymer it does not segregate in a separate phase, eventually crystallizing and...losing contact with the polymer."
The small planar molecule has carbon atoms that form a triangular configuration, and its lowest unoccupied molecular orbital plays a key role in increasing the doped material's conductivity. Experiments determined the material is well combined with a semiconducting polymer, enabling the polymer's conductivity to be raised by several tens and even hundreds of times.
From Lomonosov Moscow State University
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