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Physical Chemistry Seminar 228: Natalie Banerejie

November 14, 2022 4:00 pm - 5:00 pm
Mani L. Bhaumik Centennial Collaboratory
607 Charles E. Young Dr., East
Los Angeles, CA 90095 United States
Speaker Natalie Banerjie


Prof. Banerjie Flyer

Title: Organic Semiconductors in Electronics, Photovoltaics and Bioelectronics

Abstrac: Organic conjugated materials have many favourable properties that make them interesting for a variety of electronic applications. The aim of my group is to understand the fundamental processes underlying their functionality. We use ultrafast spectroscopic techniques, such as transient absorption (TA) and time-domain terahertz (TD-THz) spectroscopies, to investigate charge carriers in organic semiconductors. While femtosecond TA measurements bring insights to the nature and evolution of the photoexcited species, we use TD-THz spectroscopy to gain information about the charge transport properties on the nanoscale. After presenting an overview of our experimental techniques, I will show results about charge generation in highly efficient solar cell materials based on organic polymer:nonfullerene blends. The photophysical properties of doped organic semiconductors are then discussed, as well as their applications to bioelectronic devices such as organic electrochemical transistors (OECTs). Finally, ways to explore ultrafast spectroscopy to study such devices in operando are presented.

Natalie Banerjie

Department of Chemistry, Biochemistry and Pharmaceutical Sciences

University of Bern