Seminar Announcement: Francesco Scotognella

Data pubblicazione: 4-dic-2018 11.23.24

Announcement

Monday, 3 December 2018, 11:00

Sala Grande Palazzina B via alla Cascata 56/C

"Doped semiconductor nanocrystals for photonic and energy applications"

Francesco Scotognella

Dipartimento di Fisica - Politecnico di Milano,

E-mail: francesco.scotognella@polimi.it

Abstract

Doped semiconductor nanocrystals, as indium tin oxide and copper chalcogenide nanocrystals, are materials with a doping level of about 10²¹ charges/cm³. Therefore, they exhibit an intense localised surface plasmon resonance in the near infrared. This plasmonic resonance, depending on the number of carriers in the material, can be tuned in several ways, via chemical routes, via electrochemical, electric and optical stimuli.

We show photonic structures that embed doped semiconductor nanocrystals. The photonic structures show a tunable structural colour via photodoping and electrodoping.

Moreover, we discuss the possibility to exploit these nanomaterials, with their strong absorption in the near infrared, for energy applications.