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Seminar Announcement: Marco Cremona

posted Dec 19, 2017, 11:51 PM by Stefano Varas   [ updated Dec 21, 2017, 1:20 AM ]

Tuesday, 19 December 2017, 11:00
Sala Grande Palazzina B via alla Cascata 56/C

"Organic lanthanides complexes for NIR OLEDs and magnetoresistance investigation"

Marco Cremona
Departamento de Física, PUC-Rio, Rua Marques S. Vicente, 225, 22453-900
Rio de Janeiro, RJ Brasile

The complexes of f-elements, particularly near-infrared (NIR) emitters are gaining much attention for their potential applications in optical communications, optoelectronic devices and biomedical diagnostic application. The emission from their complexes can be properly utilised in the form of OLEDs. In our laboratories Nd, Yb and Er complexes based on the various fluorinated/non-fluorinated β-diketones and O-donor neutral ligands were synthesised and fully characterised. OLEDs were fabricated and investigated using these complexes as emitting layers along with other organic layers. Moreover, a family of rare-earth quinolinate based complexes, namely tetrakis 8-hydroxyquinolinate (M[RE(q)4], with M=countercation), were used as active layers in the investigation of the spin-orbit coupling in organic magnetoresistance (OMAR) effect. Our measurements in these devices discovered a new feature in the OMAR curves evidencing the influence of the spin-orbit coupling mechanism on charge transport. These results and others will be presented and discussed in this talk.

Stefano Varas,
Dec 19, 2017, 11:51 PM