Electroluminescent organic materials

The recent discovery of electroluminiscent organic materials opens new perp ectives for the preparation of light emiter diodes, screens and thin profil e monitors. The basic unity of these devices is a light emiter diode made o f thin films, which can be deposited using relatively simple techniques ove r a large variety of substrates. These new electroluminiscent materials exi st as conjugated polymers (electric charge conductors) or as small molecule s, evanescent oligomers, constituted by one or more chemical unites. Resear ch on these materials is a field of productive, attractive and interdiscipl inary work that require the close collaboration between physicists and chem ists, in the theoretical as well as in the experimental level. Some cases o f diodes and other electroluminiscent elements made of organic materials ar e presented in this paper. In the same way, some measurements of the electr onic levels using a tunnel effect microscope are shown. In the use of this instrument, the sharpness of the microscope can be as a cathod of an electr oluminscent diode, characteristic that allows to measure the spectra of the electroluminiscent emission in regions of nanoscopic ranges.