Freitag, 17. Juni 2016, 14:00 - 15:30 iCal

Dr. Theodoros Dimopoulos/

AIT Austrian Institute of Technology, Wien
"Solution-processing of metal oxide layers and nanostructures for low-cost thin film photovoltaics"

Seminarraum 2 der Fakultät für Chemie
Währinger Straße 42, 1090 Wien


Thin-film photovoltaics (TFPV) bear a huge potential for providing abundant and affordable energy in the future‘s global electricity-genera¬tion mix. TFPV assemble a number of excep¬tional features. Unlike silicon, they are based on direct bandgap semiconductor absorbers (such as the copper-indium-gallium-diselenide or cadmium telluride) with very high absorption coefficient, so that they can be made very thin (in the µm range). This reduces the materials consumption, increases the processing speed and offers flexibility in terms of module design and application.

Particularly important for the large-scale imple¬mentation of TFPV is the drastic reduction of processing costs, which is served by the replacement of the cost-intensive, vacuum-based techniques by solution-based routes. Such processing routes are particularly suitable for the deposition of metal oxides, which are indispensable compo¬nents to all thin-film photovoltaic cells, being employed mostly as transparent conductive elec¬trodes, buffer and window layers, but also as solar absorbers. In this seminar we will focus on the electrochemical deposition, chemical bath deposition and spray pyrolysis of zinc oxide (ZnO) trans¬parent conductive materials doped with group-13 metals (Al, Ga, In), as well as Mg. We will describe the chemistry and mechanisms that influence the structural, optical and electrical properties of ZnO films and nanostructures and elaborate on their implementation in thin film cells. Finally, we will discuss the prospects and potential of all-oxide photovoltaic cells based on electro¬deposited, p-type cuprous oxide (Cu2O) absorber.


Fakultät für Chemie


Brigitte Schwarz
Fakultät für Chemie der Universität Wien