Institute of Applied Physics - research group of Prof. Dr. Kalt

News

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Determination of the band-gap energies of thin layers

J. Seeger et al. developed a novel method, which allows for a non-destructive determination of the band-gap energy of extremely thin layers in CIGS solar cells. (Appl. Phys. Lett. 115, 263901 (2019))

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Semiconductor Optics 1 - Linear Optical Properties of Semiconductors

This book provides a comprehensive introduction to the linear optical properties of semiconductors. Inserts on important experimental techniques as well as sections on topical research support research-oriented teaching and learning.

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Micro-lasers with wide tunability

T. Siegle et al. successfully realized a laser source with a few micrometer in dimension, which is tunable over a wide spectral range. This was achieved using micro resonators on flexible substrates. (APL Photonics 2, 096103 (2017))

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Why Perovskite Solar Cells Are So Efficient

F. Ruf et al. gain new insight into optoelectronic properties of perovskite solar cells. Transitions of excitonic nature were investigated using temperature dependent optical spectroscopy. (Appl. Phys. Lett. 112, 083902 (2018))

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