Embodiments of a photovoltaic device are provided herein. The photovoltaic device can include a layer stack and an absorber layer disposed on the layer stack. The absorber layer can include a first region and a second region. Each of the first region of the absorber layer and the second region of the absorber layer can include a compound comprising cadmium, selenium, and tellurium. An atomic concentration of selenium can vary across the absorber layer. The first region of the absorber layer can have a thickness between 100 nanometers to 3000 nanometers. The second region of the absorber layer can have a thickness between 100 nanometers to 3000 nanometers. A ratio of an average atomic concentration of selenium in the first region of the absorber layer to an average atomic concentration of selenium in the second region of the absorber layer can be greater than 10.

Embodiments of a photovoltaic device are provided herein. The photovoltaic device can include a layer stack and an absorber layer disposed on the layer stack. The absorber layer can include a first region and a second region. Each of the first region of the absorber layer and the second region of the absorber layer can include a compound comprising cadmium, selenium, and tellurium. An atomic concentration of selenium can vary across the absorber layer. The first region of the absorber layer can have a thickness between 100 nanometers to 3000 nanometers. The second region of the absorber layer can have a thickness between 100 nanometers to 3000 nanometers. A ratio of an average atomic concentration of selenium in the first region of the absorber layer to an average atomic concentration of selenium in the second region of the absorber layer can be greater than 10.

A method for forming a photovoltaic device includes providing a substrate. A layer is deposited to form one or more layers of a photovoltaic stack on the substrate. The depositing of the amorphous layer includes performing a high power flash deposition for depositing a first portion of the layer. A low power deposition is performed for depositing a second portion of the layer.

A method for forming a photovoltaic device includes providing a substrate. A layer is deposited to form one or more layers of a photovoltaic stack on the substrate. The depositing of the amorphous layer includes performing a high power flash deposition for depositing a first portion of the layer. A low power deposition is performed for depositing a second portion of the layer.

This application provides a display device and an active array switch substrate thereof. The active array switch substrate includes: a substrate; active array switches, formed on the substrate, where the active array switch includes a source electrode; at least one solar structure, disposed on the source electrode, where the solar structure includes a solar cell; and a transparent electrode, covered on the solar cell. The solar cell includes an N-type layer, an I-type layer of a microcrystalline silicon structure, and a P-type layer sequentially stacked in a direction away from the source electrode.

This application provides a display device and an active array switch substrate thereof. The active array switch substrate includes: a substrate; active array switches, formed on the substrate, where the active array switch includes a source electrode; at least one solar structure, disposed on the source electrode, where the solar structure includes a solar cell; and a transparent electrode, covered on the solar cell. The solar cell includes an N-type layer, an I-type layer of a microcrystalline silicon structure, and a P-type layer sequentially stacked in a direction away from the source electrode.

A multijunction solar cell comprising at least a first subcell and a second subcell, a first alpha layer disposed over said first solar subcell grown using a surfactant and dopant including selenium or tellurium, the first alpha layer configured to prevent threading dislocations from propagating; a metamorphic grading interlayer disposed over and directly adjacent to said first alpha layer; a second alpha layer grown using a surfactant and dopant including selenium or tellurium over and disposed directly adjacent to said grading interlayer to prevent threading dislocations from propagating; wherein the second solar subcell is disposed over said grading interlayer such that the second solar subcell is lattice mismatched with respect to the first solar subcell.

A method of forming a multijunction solar cell comprising at least a first subcell and a second subcell, the method including forming a first alpha layer over said first solar subcell using a surfactant and dopant including selenium or tellurium, the first alpha layer configured to prevent threading dislocations from propagating; forming a metamorphic grading interlayer over and directly adjacent to said first alpha layer; forming a second alpha layer using a surfactant and dopant including selenium or tellurium over and directly adjacent to said grading interlayer to prevent threading dislocations from propagating; and forming the second solar subcell over said grading interlayer such that the second solar subcell is lattice mismatched with respect to the first solar subcell.

A method of forming a multijunction solar cell comprising at least a first subcell and a second subcell, the method including forming a first alpha layer over said first solar subcell using a surfactant and dopant including selenium or tellurium, the first alpha layer configured to prevent threading dislocations from propagating; forming a metamorphic grading interlayer over and directly adjacent to said first alpha layer; forming a second alpha layer using a surfactant and dopant including selenium or tellurium over and directly adjacent to said grading interlayer to prevent threading dislocations from propagating; and forming the second solar subcell over said grading interlayer such that the second solar subcell is lattice mismatched with respect to the first solar subcell.

A method for forming a photovoltaic device includes providing a substrate. A layer is deposited to form one or more layers of a photovoltaic stack on the substrate. The depositing of the amorphous layer includes performing a high power flash deposition for depositing a first portion of the layer. A low power deposition is performed for depositing a second portion of the layer.