An apparatus for collecting solar energy, including a first panel, wherein the first panel allows at least 50% of incident light having a wavelength in the range of 1 nm to 1,500 nm to pass through said panel and a second panel, wherein the second panel allows at least 50% of incident light having a wavelength in the range of 410 nm to 650 nm to pass through said panel. A photovoltaic cell is disposed between the first panel and second panel, which includes a first electrode disposed adjacent to the first panel, a second electrode disposed adjacent to the second panel, a photovoltaic component contacting the first and second electrodes. The photovoltaic component absorbs at least 50% of light having a wavelength in one of the following ranges: greater than 650 nm, less than 410 nm and combinations thereof.

An optoelectronic device has a layered construction, comprising a base layer, a first conductive layer, a photoactive layer and a second conductive layer. Plural separation channels extending through the photoactive layer and the first conductive layer separate the photoactive layer into photoactive regions, and insulator material extends through the respective separation channels to the base layer. Between adjacent photoactive regions, electrical connectors extend inside the lateral extent of the insulator material between a surface of a second electrode that is in electrical contact with one photoactive region to an opposing surface of a first electrode that is in electrical contact with the other photoactive region. By forming the electrical connectors extend inside the lateral extent of the insulator material, the overall size of the connection is minimised.

The present invention provides a bifacial power generation thin-film solar cell, which comprises: an upper packaging layer; plural first thin-film solar cell units, below the upper packaging layer; a spacer layer, below the first thin-film solar cell units; plural second thin-film solar cell units, below the spacer layer; and a lower packaging layer, below the second thin-film solar cell units; wherein the first thin-film solar cell units, the spacer layer and the second thin-film solar cell units have plural packaging borders; wherein both the first and second thin-film solar cell units comprise respectively: a first electrode layer; a first carrier transport layer, below the first electrode layer; a light-absorption layer, below the first carrier transport layer; a second carrier transport layer, below the light-absorption layer; and a second electrode layer, below the second carrier transport layer.

The present invention provides a bifacial power generation thin-film solar cell, which comprises: an upper packaging layer; plural first thin-film solar cell units, below the upper packaging layer; a spacer layer, below the first thin-film solar cell units; plural second thin-film solar cell units, below the spacer layer; and a lower packaging layer, below the second thin-film solar cell units; wherein the first thin-film solar cell units, the spacer layer and the second thin-film solar cell units have plural packaging borders; wherein both the first and second thin-film solar cell units comprise respectively: a first electrode layer; a first carrier transport layer, below the first electrode layer; a light-absorption layer, below the first carrier transport layer; a second carrier transport layer, below the light-absorption layer; and a second electrode layer, below the second carrier transport layer.

A photovoltaic element including at least one photovoltaic cell at least partially segmented and having a base electrode, a top electrode, and a layer system comprising at least one photoactive layer, wherein the layer system is arranged between the base electrode and the top electrode, the segments are configured such that at least the top electrode and the layer system of one of the segments are separated from the top electrode and the layer system of another segment by at least one cavity to prevent contact between one another, the at least one cavity is formed substantially vertically relative to the layer system of the at least one photovoltaic cell, and the segments are electrically conductively connected in parallel with one another such that a flow of electric current through the at least one photovoltaic cell is distributed over each of the segments.

A photovoltaic element including at least one photovoltaic cell at least partially segmented and having a base electrode, a top electrode, and a layer system comprising at least one photoactive layer, wherein the layer system is arranged between the base electrode and the top electrode, the segments are configured such that at least the top electrode and the layer system of one of the segments are separated from the top electrode and the layer system of another segment by at least one cavity to prevent contact between one another, the at least one cavity is formed substantially vertically relative to the layer system of the at least one photovoltaic cell, and the segments are electrically conductively connected in parallel with one another such that a flow of electric current through the at least one photovoltaic cell is distributed over each of the segments.

A photoelectric conversion element includes a support body having flexibility, a perovskite layer, and a second electrode, and an average thickness T.sub.1 (m) of the support body and an average thickness T.sub.2 (nm) of the perovskite layer satisfy the relationship T.sub.2/T.sub.16.

A photoelectric conversion element includes a support body having flexibility, a perovskite layer, and a second electrode, and an average thickness T.sub.1 (m) of the support body and an average thickness T.sub.2 (nm) of the perovskite layer satisfy the relationship T.sub.2/T.sub.16.

A stacked cell and preparation method thereof. The stacked cell includes: a crystalline silicon cell; a conductive connecting layer located on a surface of the crystalline silicon cell; a first isolation layer extending from a surface of the conductive connecting layer facing away from the crystalline silicon cell to penetrate through the conductive connecting layer, and a perovskite cell located on the surface of the conductive connecting layer facing away from the crystalline silicon cell.

A stacked cell and preparation method thereof. The stacked cell includes: a crystalline silicon cell; a conductive connecting layer located on a surface of the crystalline silicon cell; a first isolation layer extending from a surface of the conductive connecting layer facing away from the crystalline silicon cell to penetrate through the conductive connecting layer, and a perovskite cell located on the surface of the conductive connecting layer facing away from the crystalline silicon cell.