Montag, 18. Juni 2018, 11:00 - 12:30 iCal

Guest talk: Dr. Vladimir Lesnyak

Physical Chemistry TU Dresden

“Colloidal Semiconductor Nanocrystals: Design,

Assembly & Applications”

Fakultät für Chemie, Seminarraum 1
Boltzmanngasse 1, 1090 Wien


In this talk I will summarize our recent work on the colloidal synthesis of different semiconductor nano-crystals from simple binary compounds, such as CdTe, copper chalcogenides to more complex multicomponent ternary and quaternary systems, such as Cu-Zn-In-S and Cu-Zn-Sn-Se. Particular attention will be paid to cation ex-change reactions, as a convenient method for modifying the chemical composition of inorganic nanocrystals as well as to ligand exchange, as an approach to modify their surface chemistry. In the framework of the colloidal synthesis I will show a well-controllable approach to create core/shell heterostructures based on CdSe quantum dots. Furthermore, quite novel and intensively developed aspect of semiconductor nanoparticles, namely local-ized surface plasmon resonance, will be touched upon on the example of copper chalcogenide nanocrystals with demonstration of electrochemical modulation of their light absorption. Thereafter, applications of semi-conductor nanocrystals as conducting layers, quantum dot-in-polymer composites as solar concentrators will be discussed.


Fakultät für Chemie, Institut für Physikalische Chemie


Lena Yadlapalli
Dekanat der Fakultät für Chemie