Foredrag med Otto Mønsted Gæsteprofessor, Natalie Stingelin, fra Georgia Tech

Titlen på foredraget er ”Phase Diagrammes of Complex Materials: From the Katana, Swiss Chocolates to Organic Semiconducting Devices”.

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Phase Diagrammes of Complex Materials:
From the Katana, Swiss Chocolates to Organic Semiconducting Devices


Natalie Stingelin
1School of Materials Science & Engineering / School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30308, USA
E-mail: natalie.stingelin@gatech.edu

ABSTRACT
In the past decade, significant progress has been made in the fabrication of polymer-based devices, such as organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs) or organic photovoltaics (OPVs), predominantly due to important improvements of existing materials and the creation of a wealth of novel compounds. Many challenges, however, still exist: from achieving reliable device fabrication, increasing the device stability and, more fundamentally, gaining a complete understanding how structural features over all length scales affect important optoelectronic and photophysical processes in such polymers, including charge transport, charge generation, and general photovoltaic processes. Here we demonstrate how classical polymer science tools can be used to elucidate the structure development of semiconducting polymers from the liquid phase, how such knowledge can be exploited to manipulate their phase transformations and solid-state order and, in turn, their electronic features and device performances. More specifically, we will illustrate how rules that explain the mechanical properties of the Katana and distinguishes good from lesser tasty chocolates, can be applied to organic semiconductors to manipulate their properties and, hence, and their consequent performance when used as active layers in organic optoelectronic devices, including organic thin-film field-effect transistors, organic light-emitting diodes or organic photovoltaic cells.


Tidspunkt

tor 05 nov 20
15:00 - 16:00

Arrangør

DTU Energi

Hvor

DTU Lyngby Campus

Anker Engelunds Vej 1

Bygning 101, Mødelokale 1.