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ILO Résumé de rapport

Project ID: IST-2001-33057
Financé au titre de: FP5-IST
Pays: Italy

Advanced optical set up for nanoscale characterization of materials and devices

A novel facility to perform nanoscale ultrafast spectroscopy and nanoscale photolithography has been designed and implemented. Single and multiphoton femtosecond excitation coupled to a Laser Scanning Confocal Microscope and photon counting Streak Camera detection allows performing photoluminescence spectroscopy with in-plane spatial resolution of up to 120nm and temporal resolution of 2ps. The facility combines high performance imaging capabilities in 3D with high sensitivity spectroscopic detection of time-resolved photoluminescence (PL). Imaging and spectroscopy are performed on the same spatial position thus allowing a direct correlation of the morphological features with the spectroscopic properties.

A direct use of this Optical Nano Probe is in the spectroscopic investigation and imaging of the active areas of molecular electronic and optoelectronic devices such as TFTs, LEDs and PVs cells. Morphology of active layers within working devices can be correlated to field distributions, charge flows, charge recombination and light emission. Nanoscale spectroscopic analyses range from integrated light emission, steady state PL, time resolved PL, one and two photon excited PL, and one and two photon excitation profiles. The new Nanoscale Femtosecond facility sheds light into phenomena, which occurs at the nanoscale and may become an unprecedented tool in the evaluation of organic, hybrid and biological nanostructures and nanodevices.

Informations connexes


Michele MUCCINI, (Head of Unit)
Tél.: +39-0516398521