POLYHETEROAROMATIC COMPOUNDS FOR CHARGE TRANSPORT IN ELECTRONIC DEVICES

The new generations of optoelectronic devices based on organic materials present a multilayer architecture, where different components a sequentially deposited. Each of these thin films plays a specific role for the right device working. Some organic materials combine the structural and electronic properties required for their application as semiconductors. Nevertheless, charge transport in organic semiconductors becomes difficult due to the inherent disorder and stability issues commonly found in this type of materials. Consequently, this problems condition the performance, degradation and lifetime of the electronic devices. Additionally, in those devices where the light absorption or the emission intervenes, charge transport materials must be transparent to the radiation that has to be absorbed or emitted, not to interfere with the device functioning. This invention provides a solution to the problems raised since it provides a new synthetic methodology that favors the generation of a new family of polyheteroaromatic compounds that allow control over the orientation of some molecules with respect to others, favoring their ordering in the solid state. The rational design of the structure of the molecules allows them to be ordered spontaneously, ensuring that said ordering favors the processes of transporting electric charge, which are typical of the operation of optoelectronic devices, such as solar cells, for example. The invention also protects the process for obtaining said compounds, characterized by the simplicity of the designed synthetic route. In addition, the cost of the new materials is significantly lower than that of HTLs available on the market.