Berlin 2014 – wissenschaftliches Programm

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AKE: Arbeitskreis Energie

AKE 9: Erneuerbare Energie 4 - Photovoltaik

AKE 9.1: Hauptvortrag

Dienstag, 18. März 2014, 11:00–11:30, DO24 Reuter Saal

The Success of Photovoltaics: A Pure Silicon Story — •Jürgen H. Werner — Institut für Photovoltaik, Universität Stuttgart

Within the last 38 years, photovoltaics went through a dramatic development: On the one hand, the price of modules and photovoltaic electricity dropped to less than 1/100 with respect to 1976. On the other hand, this drastic price reduction has solely been caused by one cell material: crystalline silicon. As a consequence, photovoltaic industry (and research) is almost in a lock-in situation: hardly any other technology is able anymore to commercially compete with the 15 to 18 % efficient standard industrial modules, containing 16 to 20 % efficient cells. Future progress probably will not be driven by research on new materials and/or new cell concepts. Instead, the success of crystalline silicon in lowering cost of photovoltaic electricity (8 cents/kWh at present in Germany) imposes other research challenges: i) Simple, low cost - but high tech - mass production technologies for silicon modules (cells) with more than 20 % (22 %) efficiency, ii) storage of photovoltaic electricity (which might also be silicon driven), iii) electrical and optical characterization methods for running large and small area photovoltaic systems, iv) intelligent photovoltaic systems, which interact with their environment.