Abstract: A method for producing a perovskite material photovoltaic device, the method comprising: depositing a layer comprising a fullerene or fullerene derivative on a perovskite material; depositing a cross-linking agent on the perovskite material or the layer comprising the fullerene or fullerene derivative, wherein the cross-linking agent comprises a silane, wherein the silane is a halosilyalkane; and depositing one or more polymers on the perovskite material or the layer comprising the fullerene or fullerene derivative.

Abstract: A method for producing a perovskite material photovoltaic device, the method comprising: depositing a layer comprising a fullerene or fullerene derivative on a perovskite material; depositing a cross-linking agent on the perovskite material or the layer comprising the fullerene or fullerene derivative, wherein the cross-linking agent comprises a silane, wherein the silane is a halosilyalkane; and depositing one or more polymers on the perovskite material or the layer comprising the fullerene or fullerene derivative.

Abstract: A metal oxide nanoparticle comprises a metal oxide core of formula M2O5, wherein M is tantalum (V) or niobium (V) and alkylsiloxane ligands bonded to the metal oxide core.

Abstract: A metal oxide nanoparticle comprises a metal oxide core of formula M2O5, wherein M is tantalum (V) or niobium (V) and alkylsiloxane ligands bonded to the metal oxide core. The alkylsiloxane ligands are selected from the group consisting of isobutylsiloxane, allylsiloxane, vinylsiloxane, n-propyl siloxane, n-butylsiloxane, sec-butyl siloxane, tert-butyl siloxane, phenylsiloxane, n-octylsiloxane, isooctylsiloxane n-dodecyl siloxane, 4 -(trimethyl silyl)phenylsiloxane, para-tolylsiloxane, 4-fluorophenyl siloxane, 4 -chlorophenyl siloxane, 4-bromophenyl siloxane, 4-iodophenylsiloxane, 4-cyanophenyl siloxane, benzylsiloxane, methylsiloxane, ethylsiloxane, 4-(trifluoromethyl)phenylsiloxane, 4 -ammoniumbutylsiloxane, and any combination thereof.

Abstract: The present disclosure relates to a perovskite sheet that includes two outer layers, each including A?X?; and a first layer that includes BX2, where B is a first cation, A? is a second cation, X is a first anion, X? is a second anion, and the first BX2 layer is positioned between the two outer layers.

Abstract: A method for producing a perovskite material photovoltaic device, the method comprising: depositing a layer comprising a fullerene or fullerene derivative on a perovskite material; depositing a cross-linking agent on the perovskite material or the layer comprising the fullerene or fullerene derivative, wherein the cross-linking agent comprises a silane, wherein the silane is a halosilyalkane; and depositing one or more polymers on the perovskite material or the layer comprising the fullerene or fullerene derivative.

Abstract: A nanoparticle that includes a metal oxide core having the formula M2O5 wherein M is either tantalum (V) or niobium (V) and alkylsiloxane ligands surrounding the metal oxide core.

Abstract: A nanoparticle that includes a metal oxide core having the formula M2O5 wherein M is either tantalum (V) or niobium (V) and alkylsiloxane ligands surrounding the metal oxide core.

Abstract: A photovoltaic device includes a photoactive material comprising a perovskite material and an interfacial layer comprising a cross-linked polymer that comprises a fullerene or fullerene derivative, a cross-linking agent, and one or more polymers selected from the group consisting of polystyrene, [6,6]-phenyl-C61-butyric acid methyl ester, poly(4-vinylphenol), [6,6]-phenyl-C61-butyric acid, and any combination thereof.

Abstract: A photovoltaic device includes a photoactive material comprising a perovskite material and an interfacial layer comprising a cross-linked polymer that comprises a fullerene or fullerene derivative, a cross-linking agent, and one or more polymers selected from the group consisting of polystyrene, [6,6]-phenyl-C61-butyric acid methyl ester, poly(4-vinylphenol), [6,6]-phenyl-C61-butyric acid, and any combination thereof.

Abstract: A nanoparticle that includes a metal oxide core having the formula M2O5 wherein M is either tantalum (V) or niobium (V) and alkylsiloxane ligands surrounding the metal oxide core.

Abstract: The present disclosure relates to a perovskite sheet that includes two outer layers, each including A?X?; and a first layer that includes BX2, where B is a first cation, A? is a second cation, X is a first anion, X? is a second anion, and the first BX2 layer is positioned between the two outer layers.