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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11634440 B1

PDFFull Text
Date of Patent:
Apr. 25, 2023

Filed:

Sep. 23, 2019

Method of forming a crystalline or polycrystalline layer of an organic-inorganic metal halide perovskite

Applicant:

Oxford Photovoltaics Limited, Yarnton, GB;

Inventors:

Alice Elizabeth Taylor, Yarnton, GB;

Laura Miranda Perez, Yarnton, GB;

Assignee:

OXFORD PHOTOVOLTAICS LIMITED, Yarnton, GB;

Attorney:

Meunier Carlin & Curfman LLC

Primary Examiner:

Alexander R Pagano

Int. Cl.
CPC ...
C07F 7/24 (2006.01); B05D 1/00 (2006.01); C23C 14/00 (2006.01); C23C 14/06 (2006.01); C23C 14/58 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
C07F 7/24 (2013.01); B05D 1/005 (2013.01); C23C 14/0021 (2013.01); C23C 14/0694 (2013.01); C23C 14/58 (2013.01); H01L 51/001 (2013.01); H01L 51/0003 (2013.01); B05D 2401/10 (2013.01); H01L 2251/30 (2013.01);
Abstract

The present invention provides a method of forming a crystalline or polycrystalline layer of an organic-inorganic metal halide perovskite material comprising a three-dimensional crystal structure represented by the formula AMX, in which A represents an organic cation or a mixture of two or more different cations, at least one of which is an organic cation, M represents a divalent metal cation or a mixture of two or more different divalent metal cations, and X represents halide anions which are the same or different, the method comprising the steps of: (i) forming a first layer on the surface of a substrate, the first layer comprising an organic-inorganic metal halide perovskite material having a planar, layered two-dimensional crystal structure (ii) reacting the first layer with one or more organic halides to form the crystalline or polycrystalline layer comprising an organic-inorganic metal halide perovskite material having the formula AMX. Also provided is an optoelectronic or photovoltaic device including an active layer comprising an organic-inorganic metal halide perovskite material comprising a three-dimensional crystal structure represented by the formula AMX, wherein the material is obtainable using the above defined method.

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