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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 10622409 B1

PDFFull Text
Date of Patent:
Apr. 14, 2020

Filed:

Jun. 10, 2016

Photovoltaic device

Applicant:

Oxford Photovoltaics Limited, Oxfordshire, GB;

Inventors:

Brett Akira Kamino, Neuchâtel, CH;

Laura Miranda Perez, Oxfordshire, GB;

Assignee:

OXFORD PHOTOVOLTAICS LIMITED, Oxford, GB;

Attorney:

Meunier Carlin & Curfman LLC

Primary Examiner:

Andrew J Golden

Int. Cl.
CPC ...
H01L 27/30 (2006.01); H01L 51/44 (2006.01); H01L 51/42 (2006.01); H01L 51/00 (2006.01); H01L 31/036 (2006.01); H01L 31/0687 (2012.01); H01L 31/0725 (2012.01); H01L 31/0256 (2006.01); C09K 11/66 (2006.01);
U.S. Cl.
CPC ...
H01L 27/302 (2013.01); H01L 31/036 (2013.01); H01L 31/0687 (2013.01); H01L 31/0725 (2013.01); H01L 51/0032 (2013.01); H01L 51/424 (2013.01); H01L 51/4226 (2013.01); H01L 51/442 (2013.01); H01L 51/447 (2013.01); C01P 2002/34 (2013.01); C09K 11/665 (2013.01); H01L 2031/0344 (2013.01); Y02E 10/549 (2013.01); Y02P 70/521 (2015.11);
Abstract

There is provided a photovoltaic device that comprises a photoactive region, the photoactive region comprising a perovskite material of general formula AA'BXX′wherein A is a formamidinium cation ((HC(NH))), A′ is a caesium cation (Cs), B is at least one divalent inorganic cation, X is iodide and X′ is bromide, and x is greater than 0 and equal to or less than 0.4 and y is greater than 0 and less than or equal to 3. There is also provided a method of producing a photovoltaic device comprising a photoactive region comprising the perovskite material, and formulations for use in the formation of the perovskite material.

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