Alliance for Sustainable Energy, LLC

Northern Illinois University

Brown University

First Solar, Inc.

Shanghai Jiao Tong University

Kai Zhu

Mengjin Yang

Joseph Jonathan Berry

Fei Zhang

Yixin Zhao

Tao Xu

Donghoe Kim

Nitin Prabhakar Padture

Joseph Matthew Luther

Yuanyuan Zhou

Qi Jiang

Jinhui Tong

Marinus Franciscus Antonius Maria Van Hest

Axel Finn Palmstrom

Taiyang Zhang

Jaehong Park

Zhibo Zhao

Qing Wang

Zhiwen Ma

Arrelaine Allen Dameron

Jeffrey Lee Blackburn

Alan Sellinger

Aravamuthan Varadarajan

Zhen Li

Le Chen

Vera Steinmann

Tze-Bin Song

Anne-Marie Dowgiallo

Rachelle Rosemarie Ihly

John Mehmet Dagdelen

Adewole Philip Schulz

James Bacon Whitaker

Jue Gong

Xueping Yi

Natasha Teran

Jonathan Scott Tinkham

Arthur J Frank

Xun Li

Talysa Renae Klein

Photovoltaic devices having contact layers are described herein. Devices, intermediate structures, and methods for making multilayer contacts for perovskite photovoltaic devices are provided. Embodiments include back contacts for N-I-P structures.

Multilayer back contacts for perovskite photovoltaic devices

The present disclosure relates to a composition that includes a first layer that includes a perovskite and a second layer that includes a perovskitoid, where the perovskite has a first crystalline structure defined by ABX, the perovskitoid has a second crystalline structure defined by A'BX, where A is a first cation, B is a second cation, X is an anion, and A′ is a third cation having either a 1+ charge or a 2+ charge.

Compositions and methods for modifying perovskite surfaces

The present disclosure relates to a composition that includes a perovskite having a surface, where the surface includes a pyridine compound. In some embodiments of the present disclosure, the pyridine compound may include an amine functional group. In some embodiments of the present disclosure, the pyridine compound may be selected from a group that includes N(2-methylpyridine)A, N(3-methylpyridine)A, N(4-(methyl)pyridine)A, N(3-(2-ethyl)pyridine)A, and N(4-(2-ethyl)pyridine)A, where A is a cation, and the pyridine compound has an ionic radius larger than 10 Å.

Efficient and stable p-i-n structured perovskite solar cells

The present disclosure relates to a device that includes a first layer having an active material and a stabilizing material, where the active material includes a semiconductor, the stabilizing material includes at least one of an oligomer, an elastomer, a polymer, and/or a resin, and the stabilizing material provides to the device an improved performance metric compared to a device constructed of the first layer but constructed of only the active material (i.e., in the absence of the stabilizing material).

Materials for stabilizing semiconductors and methods of making the same

The present disclosure relates to a device that includes a layer that includes a perovskite, where the layer has a first side and a second side defining a thickness, the perovskite has a bulk composition as defined by AB(XX′), where A includes a first cation, B includes a second cation, X includes iodide, and X′ includes bromide, y is between 0.2 and 0.8, inclusively, and the thickness has a bromide concentration gradient across the thickness with a maximum concentration at or in the proximity of the first side and a minimum concentration at the second side.

Methods for manufacturing highly efficient wide-gap perovskite solar cells

The present disclosure relates to a composition that includes a perovskite having a stoichiometry comprising AFASnB(IX), where A is a first cation, B is a second cation, X is a halide, and 0.5≤x≤0.9, 0.5≤y≤0.9, and 0≤z≤1. In some embodiments of the present disclosure, A may include at least one of cesium, guanidinium, and/or methylammonium. In some embodiments of the present disclosure, X may include at least one of bromide and/or chloride. In some embodiments of the present disclosure, z may be equal to zero.

Methods for making low bandgap perovskites

The present disclosure relates to a composition that includes a perovskite phase having the stoichiometry ABXand a perovskite-like phase having the stoichiometry A′A″B′X′, where A is a first cation, B is a second cation, X is a first anion, A′ is a third cation, A″ is a fourth cation, B′ is a fifth cation, X′ is a second anion, and A′ is different than A″.

Narrow-bandgap perovskites using quasi-2D cation engineering

The present disclosure relates to a composition that includes a first layer that includes a perovskite defined by ABXand a second layer that includes a perovskite-like material defined by at least one of A'B&#x2032;X&#x2032;, A&#x2032;B&#x2032;X&#x2032;, A&#x2032;B&#x2032;X&#x2032;, A&#x2032;B&#x2032;X&#x2032;, and/or A&#x2032;AB&#x2032;X&#x2032;, where the first layer is adjacent to the second layer, A is a first cation, B is a second cation, X is a first anion, A&#x2032; is a third cation, B&#x2032; is a fourth cation, X&#x2032; is a second anion, and A&#x2032; is different than A.

Compositions and methods for stabilizing perovskite interfaces

The present disclosure relates to a composition that includes a material of at least one of a perovskite structure, a perovskite-like structure, and/or a perovskitoid structure, where the material includes an isotope of an element, the isotope has more neutrons than protons, and the isotope is incorporated into the perovskite structure, the perovskite-like structure, and/or the perovskitoid structure. In some embodiments of the present disclosure, the isotope may make up between greater than 0% and 100% of the element.

Methods for stabilizing perovskites

Methods are described that include contacting an alkyl ammonium metal halide film with an alkyl ammonium halide, where the alkyl ammonium metal halide film includes a first halogen and a metal, the alkyl ammonium halide includes a second halogen, such that the contacting forms an alkyl ammonium metal mixed-halide film that interfaces with the alkyl ammonium metal halide film, where the alkyl ammonium metal mixed-halide film includes the first halogen, the second halogen, and the metal.

Multi-layered perovskites, devices, and methods of making the same

An aspect of the present disclosure is a method that includes combining a first organic salt (AX), a first metal salt (M(X)), a second organic salt (AX), a second metal salt (MCl), and a solvent to form a primary solution, where AXand M(X)are present in the primary solution at a first ratio between about 0.5 to 1.0 and about 1.5 to 1.0, and AXto MClare present in the primary solution at a second ratio between about 2.0 to 1.0 and about 4.0 to 1.0. In some embodiments of the present disclosure, at least one of Aor Amay include at least one of an alkyl ammonium, an alkyl diamine, cesium, and/or rubidium.

Oriented perovskite crystals and methods of making the same

An aspect of the present disclosure is a method that includes exchanging at least a portion of a first cation of a perovskite solid with a second cation, where the exchanging is performed by exposing the perovskite solid to a precursor of the second cation, such that the precursor of the second cation oxidizes to form the second cation and the first cation reduces to form a precursor of the first cation.

Methods for producing perovskite halide films

The present disclosure relates to a mixture that includes a perovskite precursor, a solvent, and an additive that includes at least one of a first amine, a ketone, an aldehyde, a non-nucleophilic sterically hindered base, and/or a halogen-containing compound, where, upon removal of the solvent and the additive, the perovskite precursor is capable of being transformed into a perovskite.

Manufacturing of perovskite films

The present disclosure relates to a method that includes applying a first perovskite precursor solution to a substrate to form a first liquid film of the first perovskite precursor solution on the substrate; from the first liquid film, forming a first intermediate solid perovskite layer on the substrate; repeating at least once, both the applying and the forming, resulting in the creation of at least one additional intermediate solid perovskite layer; and treating a last intermediate solid perovskite layer, resulting from the at least one additional applying and the at least one additional forming, to create a final solid perovskite layer.

Methods for producing perovskite-containing devices

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Littleton, CO, United States of America

Kai Zhu