The Governing Council of the University of Toronto

Samsung Electronics Co., Ltd.

Solaires Entreprises Inc.

Huawei Technologies Canada Co., Ltd.

Makhsud I Saidaminov

Edward Hartley Sargent

Ankit Jain

Sjoerd Hoogland

Oleksandr Voznyy

Eun Joo Jang

Hyo Sook Jang

Jihyun Min

Andrew Johnston

Larissa Levina

Junghwan Kim

Edward H Sargent

Quan Lyu

Muhammad Awais

Mohammad Reza Kokaba

Yameen Ahmed

Giovanni Francesco Cotella

Yitong Dong

Peter Chun

Ya-Kun Wang

Fanglong Yuan

Petar Todorovic

Deepak Gangadharan

Erin Moloney

A method of fabricating a flexible perovskite solar cell is provided, the method comprising: coating a colloidal solution of phenyl-trimethyl-ammonium chloride (PTACl) and tin oxide onto a flexible substrate to provide an electron transport layer; coating the electron transport layer with a perovskite ink to provide a perovskite layer; coating the perovskite layer with a hole transport precursor solution to provide a hole transport layer; and depositing a metal electrode onto the hole transport layer, thereby fabricating a flexible perovskite solar cell.

Scalable method of fabricating a flexible perovskite solar cell

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 passivated perovskite film is provided, the passivated perovskite film comprising: a perovskite film, which includes an upper surface and at least one grain boundary; and a biphenyl methyl ammonium halide coating on the upper surface of the perovskite film, wherein the halide is selected from the group consisting of chloride, bromide and iodide.

Passivation of grain boundaries of perovskite films with biphenyl moieties

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

Methods are disclosed to restore the halide ions lost in the purification (ligand removal) of photoluminescent cesium lead halide or FA lead halide perovskite quantum dots. Quantum dots thus prepared can be used to deposit solid films with high packing density featuring dots with &#x3c;0.4 nm gaps therebetween, low trap density 1/40 of previously reported, high mobility 100&#xd7; previously reported, high photoluminescent quantum yield exceeding 90%, high external quantum yield exceeding 20%, and increased stability under electrical current. The quantum dots are used to formulate inks suitable for ink jet printing, drop casting, spin coating, and other solution-based methods for forming emissive layers used in light producing semiconductor devices.

Bipolar shell resurfaced perovskite quantum dots

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.

Growing community of inventors

Toronto, Canada

Makhsud I Saidaminov