Max-Planck-Gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Leland Stanford Junior University

The Ohio State University

Claudia Felser

Shoucheng Zhang

Chintamani Nagesa Ramachandra Rao

Joseph P Heremans

Xiao Zhang

Timothy McCormick

Rolf Stinshoff

Roshnee Sahoo

Sarah Watzman

Uttam Gupta

Nitesh Kumar

Catherine Ranjitha Rajamathi

Guowei Li

Nandini Trivedi

Andrew Mackenzie

Seunghyun Khim

The present invention refers to material that includes a compound of the formula ABOx wherein X is >1.5 and ≤2.5, A is independently selected from a transition metal of IUPAC groups 10 and 11, and B is independently selected from a transition metal of IUPAC group 6, 7, 8 or 9 or a main group element of IUPAC group 13, as highly active catalyst for a hydrogen evolution reaction (HER).

Electrocatalysts for hydrogen evolution reactions (HER) with delafossite oxides ABO

The present disclosure refers to increasing the catalytic efficiency of Weyl semimetals by subjecting Weyl semimetals to an external magnetic field of greater than 0 T, for example greater than 0.1 T. In a preferred embodiment of the present disclosure the Weyl semimetal is selected from the group consisting of NbP, TaP, NbAs and TaAs.

Enhancing photocatalytic water splitting efficiency of weyl semimetals by a magnetic field

The invention relates to hard magnets that include an intermetallic compound having the general compositionXX'YZ

Rare earth metal-free hard magnets

Thermoelectric devices and methods of using thermoelectric devices. A thermoelectric device includes a thermoelectric element comprised of a material having a non-zero Berry curvature. The device may operate as a Nernst generator that generates electricity in response to application of a temperature gradient to the thermoelectric element, or as an Ettingshausen cooler that pumps heat into or out of an object to be heated or cooled in response to application of a current to the thermoelectric element. In either application, the non-zero Berry curvature of the material allows the device to operate without an externally applied magnetic field.

Thermoelectric device utilizing non-zero berry curvature

An electrical device includes a charge carrier transport layer formed using a ternary semiconducting compound having a stoichiometry of 1:1:1 and an element combination selected from the set of I-II-V, I-III-IV, II-II-IV, and I-I-VI; or having a stoichiometry of 3:1:2 and an element combination selected from the set of I-III-V; or having a stoichiometry of 2:1:1 and an element combination selected from the set of I-II-IV. In some embodiments, the charge carrier transport layer is used as the radiation absorption layer for a photovoltaic cell, or a light emitting layer of a light emitting device. Other devices, such as laser diode, a photodetection device, an optical modulator, a transparent electrode and a window layer, can also be formed using the ternary semiconducting compound as the charge carrier transport.

Electrical devices formed using ternary semiconducting compounds

Growing community of inventors

Halle, Germany

Claudia Felser