Leland Stanford Junior University

University of California

Hemamala Indivari Karunadasa

Jeffrey R Long

Christopher J Chang

Marcin Majda

Emma Rose Dohner

Ian C Smith

Michael David McGehee

Adam H Slavney

Diego Solis-Ibarra

Intrinsic broadband white-light emitting phosphors and a solution-state method for producing them are disclosed. Emitters in accordance with the present invention include layered perovskite-based phosphors that comprise metals and halides and have an emission spectrum that spans the entire visible-light spectrum.

Two-dimensional perovskite phosphor and method of formation

An alloyed halide double perovskite material, an alloyed halide double perovskite solar-cell absorber and solar cells constructed with such absorbers, the alloyed halide double perovskite material having the formula ABB'DX, where A is an inorganic cation, an organic cation, a mixture of inorganic cations, a mixture of organic cations, or a mixture of one or more inorganic cations and one or more organic cations, where B is a metal, a mixture of metals, a metalloid, a mixture of metalloids, any mixture thereof, or is a vacancy, where B&#x2032; is a metal, a mixture of metals, a metalloid, a mixture of metalloids, any mixture thereof, or is a vacancy, where D is a dopant, and where X is a halide, a pseudohalide, a mixture of halides, a mixture of pseudohalides, or a mixture of halides and pseudohalides, and where x=a+b.

Alloyed halide double perovskites as solar-cell absorbers

A sorbent in the form of a layered, non-porous perovskite is provided, wherein the sorbent can include parallel, alternating layers of an organic layer, including an ordered array of organic moieties capable of reacting with a gaseous halogen, and an inorganic layer, including a metal-halide sheet. Furthermore, each organic layer can be sandwiched between inorganic layers. Methods for capturing one or more halogens from a gas stream are also provided, wherein the methods can include contacting a gas stream with a sorbent in the form of a layered, non-porous perovskite, wherein the sorbent can include parallel, alternating layers of an organic layer, including an ordered array of organic moieties capable of reacting with a gaseous halogen, and an inorganic layer, including a metal-halide sheet. One or more halogens in the gas stream can react with either alkyne groups or alkene groups found in the organic layer of the sorbent.

Reversible and irreversible chemisorption in nonporous, crystalline hybrid structures

A solar cell includes a light-absorbing layer comprising a 2d-perovskite.

Solar cells comprising 2d-perovskites

New metal persulfido compositions of matter are described. In one embodiment the metal is molybdenum and the metal persulfido complex mimics the structure and function of the triangular active edge site fragments of MoS, a material that is the current industry standard for petroleum hydro desulfurization, as well as a promising low-cost alternative to platinum for electrocatalytic hydrogen production. This molecular [(PY5W)MoS]containing catalyst is capable of generating hydrogen from acidic-buffered water or even seawater at very low overpotentials at a turnover frequency rate in excess of 500 moles Hper mole catalyst per second, with a turnover number (over a 20 hour period) of at least 19,000,000 moles Hper mole of catalyst.

Molecular molybdenum persulfide and related catalysts for generating hydrogen from water

A composition of matter suitable for the generation of hydrogen from water is described, the positively charged cation of the composition having the general formula [(PY5W)MO], wherein PY5Wis (NCXYZ)(NCH)CW, M is a transition metal, and W, X, Y, and Z can be H, R, a halide, CF, or SiR, where R can be an alkyl or aryl group. The two accompanying counter anions, in one embodiment, can be selected from the following Cl, I, PF, and CFSO. In embodiments of the invention, water, such as tap water containing electrolyte or straight sea water can be subject to an electric potential of between 1.0 V and 1.4 V relative to the standard hydrogen electrode, which at pH 7 corresponds to an overpotential of 0.6 to 1.0 V, with the result being, among other things, the generation of hydrogen with an optimal turnover frequency of ca. 1.5 million mol H/mol catalyst per h.

Growing community of inventors

Palo Alto, CA, United States of America

Hemamala Indivari Karunadasa