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Electron Dynamics in Hybrid Organic Materials

 

The research activity of the group is dedicated to the study of thin film growth and of the electronic properties of interfaces of ultrathin organic films with metal substrates as well as of hetero-organic interfaces. We focus our research on systems composed of organic molecules of potential interest in organic electronics, photovoltaic technology and sensors design. We characterize the electronic dynamic properties of these systems with advanced time resolved spectroscopies, and specifically we study charge delocalization processes occurring in the fs-ns temporal range. Recently we concentrated on films of polyacenes, phthalocyanines, porphyrines which exhibit the most promising properties in terms of electronic transport and optical response. To identify possible routes to increase the efficiency of the devices based on these molecules, we investigate the role played by functional groups or by foreign atomic species introduced in their structure. which could represent novel transport channels in the devices based on these materials.

Moreover, we study (also in the framework of the PRIN project “Fast ElectRon dynamics in novel hybrid organic-2D MATerials – FERMAT”) complex systems that include the interposition of a Self Assembled Monolayer (SAM) or a 2D material between the substrate and the organic active layers. Such film architecture is considered a possible strategy to improve the charge carrier injection/extraction to/from the substrate. The group operates the ANCHOR-SUNDYN experimental laboratory, one of the CNR endstations at the Elettra Synchrothron in Trieste.

The laboratory combines spectroscopy techniques like XPS, UPS and NEXAFS for the characterization of the systems chemistry, with double-ionization techniques (2 photon photoemission-2PPE, pump & probe, resonant photoemission) for the description of the electronic dynamics.

 

 

CONTACTS
Alberto Morgante
Department of Physics
University of Trieste
 
amorgante@units.it; morgante@iom.cnr.it

Martina Dell’Angela
IOM-CNR
  dellangela@iom.cnr.it

Albano Cossaro
Department of Chemical and Pharmaceutical Sciences
University of Trieste
  acossaro@units.it

 

Last updated on: 06/10/2020 - 15:58