Oxford Photovoltaics Limited

Other

Csem Centre Suisse D'electronique Et De Microtechnique Sa

Brett Akira Kamino

Laura Miranda Perez

Edward James William Crossland

Nicola Beaumont

Benjamin Langley

Christophe Ballif

Matthieu Despeisse

Nicolas Badel

Antonin Faes

Jonas Geissbühler

Sylvain Nicolay

Björn Niesen

Arnaud Walter

There is provided a method of producing a photovoltaic device comprising a photoactive region comprising a layer of perovskite material, wherein the layer of perovskite material is disposed on a surface that has a roughness average (R) or root mean square roughness (R) of greater than or equal to 50 nm. The method comprises using vapour deposition to deposit a substantially continuous and conformal solid layer comprising one or more initial precursor compounds of the perovskite material, and subsequently treating the solid layer with one or more further precursor compounds to form a substantially continuous and conformal solid layer of the perovskite material on the rough surface. There is also provided a photovoltaic device comprising a photoactive region comprising a layer of perovskite material disposed using the method.

Method of depositing a perovskite material

Photovoltaic module comprising a plurality of multijunction photovoltaic cells, at least one of said multijunction photovoltaic cells comprising:

Photovoltaic module

There is provided a photovoltaic device that comprises a photoactive region, the photoactive region comprising a perovskite material of general formula AA'BXX&#x2032;, wherein A is a formamidinium cation (HC(NH))), A&#x2032; 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.

Photovoltaic device

A formulation for use in the preferential formation of thin films of a perovskite material AMXwith a certain required crystalline structure, wherein said formulation comprises two or more compounds which between them comprise one or more first organic cations A; one or more metal cations M; one or more second cations A'; one or more first anions X and one or more second anions X&#x2032;.

Mixed organic-inorganic perovskite formulations

There is provided a photovoltaic device that comprises a photoactive region, the photoactive region comprising a perovskite material of general formula AA'BXX&#x2032;wherein A is a formamidinium cation ((HC(NH))), A&#x2032; is a caesium cation (Cs), B is at least one divalent inorganic cation, X is iodide and X&#x2032; 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.

A formulation for use in the preferential formation of thin films of a perovskite material AMX 3 with a certain required crystalline structure, wherein said formulation comprises two or more compounds which between them comprise one or more first organic cations A; one or more metalcations M; one or more second cations A'; one or more first anions X and one or more second anions X&#x2032;.

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Neuchâtel, Switzerland

Brett Akira Kamino