Fyzikální ústav Akademie věd ČR

Abstract: Zincblende semiconductors are materials used in electronics since decades. In the last years, these compounds have been revisited and studied in the context of topological insulators and semimetals. For example, a two-dimensional CdTe/HgTe/CdTe quantum-well is a prototypical topological insulator studied intensively since 2005. Thouless, Haldane and Kosterlitz were awarded this years Nobel prize in physics for their fundamental work, which finally led to the current immense interest in these materials.

In this presentation we discuss recent developments in the field of silicon heterojunction solar cells. This technology is a prime example of so-called passivating contacts. Such contacts passivate the silicon surface states and collect one carrier type, while blocking the opposite type. Here, we specifically discuss three different strategies to improve the optical response of silicon heterojunction devices. First, doped amorphous silicon layers at the front can be replaced by highly transparent transition metal oxides for carrier collection.

This workshop covers in three days basics of Jana2006, work with simple modulated structures, and advanced topics. Participants interested only in basics of Jana2006 may skip the last workshop day; participants already experienced with Jana2006 may skip the first day. Workshop examples use both single crystal and powder data.

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