Inorganic‐organic lead‐halide perovskite solar cells have reached efficiencies above 22%
within a few years of research. Achieved photovoltages of> 1.2 V are outstanding for a …

Among thin-film photovoltaic technology, cadmium telluride (CdTe) has achieved a truly
impressive development that can commercially compete with silicon, which is still the king of …

The past 2 years have seen the uniquely rapid emergence of a new class of solar cell based
on mixed organic–inorganic halide perovskite. Grain boundaries are present in …

In this contribution, we present a new certified world record efficiency of 20.1 and 20.3% for
Cu (In, Ga) Se2 thin‐film solar cells. We analyse the characteristics of solar cells on such a …

Adv. Mater. 2012, 24, 720–723 generated when the 650 nm wavelength (1.9 eV) laser light
that scatters off the AFM tip gets absorbed by the∼ 1.15 eV bandgap CIGS,∼ 1.5 eV …

We summarize the progress made recently in understanding the electronic structure of
chalcopyrites. New insights into the dispersion of valence and conduction band allow …

Chalcopyrite solar cells achieve efficiencies above 23%. The latest improvements are due to
post‐deposition treatments (PDT) with heavy alkalis. This study provides a comprehensive …

Solution-processed organic and inorganic semiconductors offer a promising path towards
low-cost mass production of solar cells. Among the various material systems, solution …

The limiting factors on the efficiency of current record devices are discussed. Optical and
collection losses are found to have a minor influence. They reduce the short circuit current …

Through first‐principle density functional theory (DFT) calculations, the atomic structure and
electronic properties of intrinsic and passivated Σ3 (114) grain boundaries (GBs) in …