摘要:
A solar cell according to an example embodiment includes: a substrate; a first electrode formed on the substrate; a photoactive layer formed on the first electrode and including sodium and potassium; a buffer layer formed on the photoactive layer; and a second electrode formed on the buffer layer. The photoactive layer includes an area where a content of sodium is greater than a content of potassium.
摘要:
A solar cell includes a substrate, a barrier layer on the substrate, a back electrode layer on the barrier layer, a light absorption layer on the back electrode layer, a buffer layer on the light absorption layer, and a transparent electrode layer on the buffer layer. The barrier layer is selectively formed on the substrate. The substrate may include alkali elements. Accordingly, since alkali elements may be uniformly distributed in the light absorption layer, the efficiency of the solar cell may be improved.
摘要:
A solar cell is provided with a down-converter that converts incoming high energy photons into two or lower energy photons before conversion to electric current, in order to provide for more efficient conversion. The down-converter comprises a combination of Neodymium and Ytterbium ions in a sulfide. The sulfide may ne Indium Sulfide, doped with the Neodymium and Ytterbium. The indium sulfide may be combined with a CIS (Copper Indium Sulfide layer to form active layers of a solar cell, or the sulfide with Neodymium and Ytterbium may be used as a separate filter before conversion to electric current. A solar cell may be provided with an up converter realized by means of quantum dots in an absorber matrix.
摘要:
In order to manufacture a CIS-based thin film solar cell that can achieve high photoelectric conversion efficiency by adding an alkali element to a light absorbing layer easily and with good controllability, a backside electrode layer (2) is formed on a substrate (1). Then, a p-type CIS-based light absorbing layer (3) is formed on backside electrode layer (2), and then an n-type transparent and electroconductive film (5) is formed on this p-type CIS-based light absorbing layer (3). At this time, the backside electrode layer (2) is constituted by forming a first electrode layer (21) using a backside electrode material in which an alkali metal is mixed and, then forming a second electrode layer (22) using the backside electrode material that does not substantially contain the alkali metal.
摘要:
A method of forming a doped Group IBIIIAVIA absorber layer for solar cells by reacting a a metallic precursor layer with a dopant structure. The metallic precursor layer including Group IB and Group HIA materials such as Cu, Ga and In are deposited on a base. The dopant structure is formed on the metallic precursor layer, wherein the dopant structure includes a stack of one or more Group VIA material layers such as Se layers and one or more a dopant material layers such as Na.
摘要:
A solar cell includes a substrate, a barrier layer on the substrate, a back electrode layer on the barrier layer, a light absorption layer on the back electrode layer, a buffer layer on the light absorption layer, and a transparent electrode layer on the buffer layer. The barrier layer is selectively formed on the substrate. The substrate may include alkali elements. Accordingly, since alkali elements may be uniformly distributed in the light absorption layer, the efficiency of the solar cell may be improved.
摘要:
A layer of an n-type chalcogenide compositions including at least cadmium that is provided on a substrate in the presence of an oxidizing gas in an amount sufficient to provide a resistivity to the layer that is less than the resistivity a layer deposited under identical conditions but in the substantial absence of oxygen. Such n-type chalcogenide compositions are particularly useful in the making of photovoltaic devices.
摘要:
A solar cell is provided with a down-converter that converts incoming high energy photons into two or lower energy photons before conversion to electric current, in order to provide for more efficient conversion. The down-converter comprises a combination of Neodymium and Ytterbium ions in a sulfide. The sulfide may ne Indium Sulfide, doped with the Neodymium and Ytterbium. The indium sulfide may be combined with a CIS (Copper Indium Sulfide layer to form active layers of a solar cell, or the sulfide with Neodymium and Ytterbium may be used as a separate filter before conversion to electric current. A solar cell may be provided with an up converter realized by means of quantum dots in an absorber matrix.
摘要:
A semiconductor film has a composition in which a Group Ia element and a Group Vb element are added to a compound semiconductor with a chalcopyrite structure containing a Group Ib element, a Group IIIb element and a Group VIb element. This allows the provision of a semiconductor film whose carrier density can be controlled effectively. A solar cell (1) of the present invention includes: a substrate (11) and the semiconductor film of the present invention that is provided as a light-absorption layer (13) on the substrate (11). With this configuration, a light-absorption layer whose carrier density can be controlled effectively can be provided, so that a solar cell having a high energy conversion efficiency can be provided.