Organic Light-Emitting Transistors (OLETs) Outperforming OLEDs

You’ve heard of organic light-emitting diodes (OLEDs), right? Technology utilizing organic materials that emit light when fed by electric current? Their use in many portable electronics such as mobile phones is proof of their rise in popularity, but scientists at the Institute of Nanostructured Materials propose an alternative in the form of organic light-emitting transistors (OLETs).

Michele Mucini, a researcher at the Institute, explained to Nanowerk that “OLET is a new light-emission concept, providing planar light sources that can be easily integrated in substrates of different nature – silicon, glass, plastic, paper, etc. – using standard microelectronic techniques.” OLET development is aimed at enabling new display and light source technologies, and to address a disadvantage of OLEDs: toxic photon losses and exciton quenching mechanisms, which are inherent in OLEDs.


Image via Nanowerk

The Institute’s team of researchers have demonstrated that OLETs permit control of quenching and electrode-induced photon loss processes in an organic light-emitting device. Additionally, the team also enabled OLETs with the highest efficiency rating so far, thus ably proving advantages of the technology. Research already in progress aims to include control of photonic processes within devices, which will improve light confinement. Ultimately, the researchers expect unprecedented performances by OLETs within organic light-emitting devices.

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