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Pitfalls and prospects of optical spectroscopy to characterize perovskite-transport layer interfaces
Eline M. Hutter, Thomas Kirchartz, Bruno Ehrler +2
Perovskite photovoltaics has witnessed an unprecedented increase in power conversion efficiency over the last decade. The choice of transport layers, through which photo-generated…
A highly integrated, stand-alone photoelectrochemical device for large-scale solar hydrogen production
Minoh Lee, Bugra Turan, Jan-Philipp Becker +9
Although photoelectrochemical water splitting is likely to be an important and powerful tool to provide environmentally friendly hydrogen, most developments in this field have been…
Pathways towards 30% efficient single-junction perovskite solar cells and the role of mobile ions
Jonas Diekmann, Pietro Caprioglio, Moritz H. Futscher +13
Perovskite semiconductors have demonstrated outstanding external luminescence quantum yields, enabling high power conversion efficiencies (PCE). However, the precise conditions to…
Requirements for functional pn-homojunctions in lead-halide perovskite solar cells
Thomas Kirchartz, David Cahen
Cui et al. describe the fabrication and characterization of planar pn-junction solar cells based on lead-halide perovskites. The doping densities measured using Hall effect measure…
Type and Degree of Covalence: Empirical Derivation and Implications
Yevgeny Rakita, Thomas Kirchartz, Gary Hodes +1
The way atoms attach to each other defines the function(s), e.g., mechanical, optical, electronic, of a given material. The nature of the chemical bond is, therefore, one of the mo…
Solar Energy Conversion and the Shockley-Queisser Model, a Guide for the Perplexed
Jean-Francois Guillemoles, Thomas Kirchartz, David Cahen +1
The Shockley-Queisser model is a landmark in photovoltaic device analysis by defining an ideal situation as reference for actual solar cells. However, the model and its implication…