Author Correction: Chemical trends of deep levels in van der Waals semiconductors.

A Correction to this paper has been published: https://doi.org/10.1038/s41467-020-20151-x.

Chemical trends of deep levels in van der Waals semiconductors.

Properties of semiconductors are largely defined by crystal imperfections including native defects. Van der Waals (vdW) semiconductors, a newly emerged class of materials, are no exception: defects exist even in the purest materials and strongly affect their electrical, optical, magnetic, catalytic and sensing properties. However, unlike conventional semiconductors where energy levels of defects are well documented, they are experimentally unknown in even the best studied vdW semiconductors, impeding the understanding and utilization of these materials.

Electronically Controlled Chemical Stability of Compound Semiconductor Surfaces.

Effects of a humid environment on the degradation of semiconductors were studied to understand the role of the surface charge on material stability. Two distinctly different semiconductors with the Fermi level stabilization energy located inside the conduction band (CdO) and valence band (SnTe) were selected, and effects of an exposure to 85 °C and 85% relative humidity conditions on their electrical properties were investigated. Undoped CdO films with bulk Fermi level below and positively charged surface are very unstable.

Three-dimensional band structure and surface electron accumulation of rs-CdZnO studied by angle-resolved photoemission spectroscopy.

Three-dimensional band structure of rock-salt (rs) CdZnO (x = 1.0, 0.83, and 0.

Bistable Amphoteric Native Defect Model of Perovskite Photovoltaics.

The past few years have witnessed unprecedented rapid improvement of the performance of a new class of photovoltaics based on halide perovskites. This progress has been achieved even though there is no generally accepted mechanism of the operation of these solar cells. Here we present a model based on bistable amphoteric native defects that accounts for all key characteristics of these photovoltaics and explains many idiosyncratic properties of halide perovskites.

Room-Temperature-Synthesized High-Mobility Transparent Amorphous CdO-GaO Alloys with Widely Tunable Electronic Bands.

In this work, we have synthesized CdGaO alloy thin films at room temperature over the entire composition range by radio frequency magnetron sputtering. We found that alloy films with high Ga contents of x > 0.3 are amorphous.

Intermixing studies in GaNSb highly mismatched alloys.

GaNSb with x∼5%-7% is a highly mismatched alloy predicted to have favorable properties for application as an electrode in a photoelectrochemical cell for solar water splitting. In this study, we grew GaNSb under conditions intended to induce phase segregation. Prior experiments with the similar alloy GaNAs, the tendency of Sb to surfact, and the low growth temperatures needed to incorporate Sb all suggested that GaNSb alloys would likely exhibit phase segregation.

Formation of Nanoscale Composites of Compound Semiconductors Driven by Charge Transfer.

Composites are a class of materials that are formed by mixing two or more components. These materials often have new functional properties compared to their constituent materials. Traditionally composites are formed by self-assembly due to structural dissimilarities or by engineering different layers or structures in the material.