Archiviertes Physik-Kolloquium:

17. Jul. 2014, 16:15 Uhr, Gebäude NW1, Raum H3

Photovoltaics: The only option to fight Climate Change

Prof. Dr. Dieter Meissner, Prof. for Sustainable Energetics Tallinn University of Technology, founder of crystalsol GmbH, Vienna and Tallinn

Since mankind seems to be not intelligent enough to choose other options, only market forces remain to change our energy supply system so that dramatic climate changes can be avoided. Fortunately the price of Renewables dropped dramatically during the last years, most of all for photovoltaics, which now is just close to providing electricity cheaper than fossil fuels. However, already today many PV companies sell modules below production costs. This puts an enormous pressure on them to find ways to produce for much lower costs. Here new production technologies are needed of which the use of single crystalline powders may be one of the most promising, since it may allow the combination of an ultra-low cost module production with efficiencies achievable only with highly crystalline materials. In this talk the different options will be discussed to provide a total amount of more than 30 TW of CO2-free power needed worldwide already before 2050 in order to stabilize global temperatures. It will be shown that only energy and wind may reach the rates of energy production needed. Fortunately the prices of these technologies dropped dramatically and will make PV the cheapest technology very soon, so that market forces may overcome inertia of mankind on the one and the power of today\'s energy companies on the other hand. In more detail crystalsol\'s technology of monograin membranes will be explained, using the new material CZTS, a gunmetal chalcogenide, based on earth abundant elements.