University of Toronto

Samsung Electronics Co., Ltd.

Other

Christie Digital Systems Usa, Inc.

Toyota Motor Europe

Oleksandr Voznyy

Edward Hartley Sargent

Sjoerd Hoogland

Ankit Jain

Makhsud I Saidaminov

Eun Joo Jang

Hyo Sook Jang

Jihyun Min

Andrew Johnston

Bo Zhang

Larissa Levina

Sachin Kinge

Cao-Thang Dinh

Zhenyu Yang

Jixian Xu

Junghwan Kim

Edward H Sargent

Michael Adachi

Randy Sabatini

Kristopher Bicanic

Zhijun Ning

Xueli Zheng

Xiwen Gong

Riccardo Comin

Petar Todorovic

Min Liu

Fengjia Fan

A semiconductor nanocrystal particle represented by Chemical Formula 1 and having a full width at half maximum (FWHM) of less than or equal to about 30 nanometers (nm) in the emission wavelength spectrum is provided:AA'DE.  Chemical Formula 1 In Chemical Formula 1, A is a first metal including Rb, Cs, or a combination thereof, A′ is an organic substance derived from an ammonium salt, an organic material derived from an organic ligand, or an organic material including a combination thereof, D is a second metal including Sb, Bi, or a combination thereof E is Cl, Br, I, or a combination thereof, 1<x≤3, −1<α<1, 3+α−x>0, −1<β<1, and −1<γ<1.

Semiconductor nanocrystal particle and production methods thereof

Perovskites have high density of vacancies which absorb oxygen molecules and upon illumination, transform them into superoxide species which react with perovskites to decompose them, preventing use of these materials in many photo-applications. The present disclosure provides ways for improving the stability of perovskites in air ambient by doping perovskites with metals such as lead, cadmium, zinc, manganese, iron, cobalt, nickel, copper and tin which decreases the density of vacancies in perovskites and significantly increases the lifetime of perovskites. Perovskite solar cells containing inorganic and organic ions such as Cs+, formamidinium and methylammonium cations, Pb+, Br— and I— with these metal dopants exhibit stable efficiency within a month of storage in air ambient with the relative humidity of 50%.

Doped metal halide perovskites with improved stability and solar cells comprising same

A semiconductor nanocrystal particle including a transition metal chalcogenide represented by Chemical Formula 1, the semiconductor nanocrystal particle having a size of less than or equal to about 100 nanometers, and a method of producing the same:MMCha&#x2003;&#x2003;Chemical Formula 1

Semiconductor nanocrystal particles and production methods thereof

A semiconductor nanocrystal particle represented by Chemical Formula 1 and having a full width at half maximum (FWHM) of less than or equal to about 30 nanometers (nm) in the emission wavelength spectrum is provided:AA'DE.&#x2003;&#x2003;Chemical Formula 1In Chemical Formula 1, A is a first metal including Rb, Cs, or a combination thereof, A&#x2032; is an organic substance derived from an ammonium salt, an organic material derived from an organic ligand, or an organic material including a combination thereof, D is a second metal including Sb, Bi, or a combination thereof E is Cl, Br, I, or a combination thereof, 1&#x3c;x&#x2264;3, &#x2212;1&#x3c;&#x3b1;&#x3c;1, 3+&#x3b1;&#x2212;x&#x3e;0, &#x2212;1&#x3c;&#x3b2;&#x3c;1, and &#x2212;1&#x3c;&#x3b3;&#x3c;1.

The present disclosure provides substantially homogeneously dispersed multimetal oxy-hydroxide catalyst comprising at least two metals, at least one metal being a transition metal, and at least a second metal which is structurally dissimilar to at least one metal, such that the multimetal oxy-hydroxide is characterized by being substantially homogeneously dispersed and generally not crystalline. A key feature of the present materials is that the presence of the structurally dissimilar metal results in sufficient strain produced in the final multimetal oxy-hydroxide material to prevent crystallization from occurring. The resulting materials are specifically not annealed at temperatures that would induce crystallization in order to avoid the expected phase segregation that would occur during crystallization.

Homogeneously dispersed multimetal oxy-hydroxide catalysts

An optoelectronic device has an electron transport layer, an active layer, and a hole transport layer. Each of the electron transport layer, the active layer, and the hole transport layer has quantum dots.

All quantum dot based optoelectronic device

There is provided a quantum dot comprising a core comprising a semiconductor and a shell substantially covering the core. The core has a first side and a second side opposite the first side. The core is disposed eccentrically inside the shell such that the shell is thinnest at the first side and thickest at the second side. Moreover, the shell has a thickness of greater than or equal to zero at the first side. The core and the shell have different respective lattice constants such that the shell exerts a straining force on the core. The straining force is configured to modify an excitonic fine structure of the core.

Core-shell quantum dots and method of synthesizing thereof

The present disclosure provides a composite material of a pre-formed crystalline or polycrystalline semiconductor particles embedded in a crystalline or polycrystalline perovskite matrix material. The pre-formed crystalline or polycrystalline semiconductor particles and and crystalline or polycrystalline perovskite being selected so that any lattice mismatch between the two lattices does not exceed about 10%. The pre-formed crystalline or polycrystalline semiconductor particles and said crystalline or polycrystalline perovskite matrix material have lattice planes that are substantially aligned.

Quantum-dot-in-perovskite solids

Growing community of inventors

Thornhill, Canada

Oleksandr Voznyy