Organic OptoElectronics Laboratory

The Organic OptoElectronics Laboratory (OrgOEL) at Sincrotrone Trieste, established in 2009, investigates the properties of organic semiconductors upon funded projects in the field of organic optoelectronics.  The laboratory activities span from fundamental research in the field of electrical and optical properties of organic semiconductors to their application in devices like light emitting diodes (OLEDs), photovoltaic cells (OPVs), photodiodes (OPDs), field effect transistors (OFETs), sensors,  etc.  Activities aimed at the fabrication of ordered nanostructures by wet processing over large areas, functional to the above mentioned focus, are also carried out.
   Active collaborations are ongoing with other Elettra Beamlines (SISSI, ALOISA, SYRMEP), with italian (Dept. of Physics of the Univ. of Bologna, Dept. of Electronic Engineering of the Univ. of Cagliari) and international research groups (Center of Excellence in Microelectronics Optoelectronics and Processes-Univ. of Lisbon).  The laboratory hosts also degree and PhD students from both italian (Trieste University Graduate School of Nanotechnology) and international institutions.

Research highlights

Micro- and Nano-Patterning via wet processing

A novel method for realizing ordered, array-like patterns out of organic polymers and carbon nanotubes on planar substrates has been developed.
The method is effective, fast and very low-cost, possibly enabling applications in the fields of tissue engineering, organic electronics, etc.

A. Fraleoni-Morgera, Small, 7, 321-325, 2011

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3D transport anisotropy in organic single crystals

Three-dimensional anisotropic transport has been probed in organic semiconducting single crystals by means of both Field-Effect Transistor devices and Space-Charge Limited Current measurements.

B. Fraboni et al., Adv Mater., 2009, 21, 1835–1839

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Organic semiconducting single crystals as low cost, room temperature electrical X-ray detectors

Direct detectors for X-rays, operable in air, under ambient light and at room temperature, based on solution-grown organic semiconducting single crystals, are demonstrated.

B. Fraboni et al., Adv. Mater., 2012, 24, 2289–2293

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IR studies of organic single crystals

Linearly polarized infrared studies on charge transport in semiconducting single crystals open the door for fast crystallographic assessments, and give insights into the effect of electrical polarization and charge flow on the crystal properties.

A. Fraleoni-Morgera et al., J. Phys. Chem. C, 116, 2563 (2012).

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Easy fabrication of organized semiconducting polymer nanofibers

Nanofibers of P3HT, a well-known semiconducting polymer, have been easily and rapidly fabricated using a novel approach based on sublimating substances.  The remarkable self-organization of these fibers may allow new and interesting applications in optoelectronics.

A. Fraleoni-Morgera et al., RSC Advances, in press

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Low voltage and bendable organic semiconducting single crystals for X-rays direct detection

Bendable organic semiconducting single crystals operable at very low voltages (down to a few volts) are demonstrated to be viable direct detectors for X-rays.

B. Fraboni et al., Adv. Mater., 2015, 27, 7213–7220

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Main research lines

The research lines followe d at OrgOEL encompass organic electronics, organic photovoltaic cells and photodiodes, OLEDs.
For a complete list of the currently pursued research lines follow this link.


The research team is led by Alessandro Fraleoni Morgera, Senior Researcher, and is partly based also at the University of Trieste.


An exhaustive list of the group's publications on peer reviewed journals and presentations at conferences is available here.
Last Updated on Tuesday, 13 January 2015 16:07