摘要:
A photovoltaic device including a composite down-converting layer disposed on the device, is presented. The composite down-converting layer includes down-converting material particles dispersed in a matrix. The size of the down-converting material particles is a function of a difference in respective refractive indices (Δn) of the down-converting material and the matrix such that: (i) for Δn less than about 0.05, the size of down-converting material particles is in a range from about 0.5 micron to about 10 microns, and (ii) for Δn at least about 0.05, the size of down-converting material particles is in a range from about 1 nanometer to about 500. A photovoltaic module having a plurality of such photovoltaic devices is also presented.
摘要:
A monolithically integrated photovoltaic (PV) module is provided and includes a first electrically conductive layer and an insulating layer. The first electrically conductive layer is disposed below the insulating layer. The PV module further includes a back contact metal layer, a p-type semiconductor layer, a substantially intrinsic semiconductor layer with a median grain size of at least about five μm and comprising cadmium and tellurium, and an n-type semiconductor layer. The substantially intrinsic layer is disposed between the p-type and the n-type semiconductor layers forming an active semiconductor stack. The back contact metal layer is disposed between the insulating layer and the active semiconductor stack. The PV module further includes a second electrically conductive layer disposed above the active semiconductor stack, at least one first trench extending through the back contact metal layer, at least one second trench extending through the active semiconductor stack, and at least one third trench extending through the second electrically conductive layer.
摘要:
A photovoltaic device that includes a substrate and a nanowall structure disposed on the substrate surface. The device also includes at least one layer conformally deposited over the nanowall structure. The conformal layer(s) is at least a portion of a photoactive junction. A method for making a photovoltaic device includes generating a nanowall structure on a substrate surface and conformally depositing at least one layer over the nanowall structure thereby forming at least one photoactive junction. A solar panel includes at least one photovoltaic device based on a nanowall structure. The solar panel isolates such devices from its surrounding atmospheric environment and permits the generation of electrical power. Optoelectronic device may also incorporate a photovoltaic device based on a nanowall structure.
摘要:
In one aspect of the present invention, an article including a nanostructured functional coating disposed on a substrate is described. The functional coating is characterized by both anti-reflection properties and down-converting properties. Related optoelectronic devices are also described.
摘要:
A semiconductor structure is described, including a semiconductor substrate and a semiconductor layer disposed on the semiconductor substrate. The semiconductor layer is both compositionally graded and structurally graded. Specifically, the semiconductor layer is compositionally graded through its thickness from substantially intrinsic at the interface with the substrate to substantially doped at an opposite surface. Further, the semiconductor layer is structurally graded through its thickness from substantially crystalline at the interface with the substrate to substantially amorphous at the opposite surface. Related methods are also described.
摘要:
One exemplary embodiment is a semiconductor structure, that can include a semiconductor substrate of one conductivity type, having a front surface and a back surface, a first semiconductor layer disposed on the front surface of the semiconductor substrate, a second semiconductor layer disposed on a portion of the back surface of the semiconductor substrate, and a third semiconductor layer disposed on another portion of the back surface of the semiconductor substrate. Each of the second and third semiconductor layers may be compositionally graded through its depth, from substantially intrinsic at an interface with the substrate, to substantially conductive at an opposite side, and have a selected conductivity type obtained by the incorporation of one or more selected dopants.
摘要:
In some embodiments, the present invention is directed to photovoltaic (PV) devices comprising silicon (Si) nanowires as active PV elements, wherein such devices are typically thin film Si solar cells. Generally, such solar cells are of the p-i-n type and can be fabricated for front and/or backside (i.e., top and/or bottom) illumination. Additionally, the present invention is also directed at methods of making and using such devices, and to systems and modules (e.g., solar panels) employing such devices.
摘要:
In one aspect of the present invention, a photovoltaic device is provided. The photovoltaic device includes a transparent layer; a first porous layer disposed on the transparent layer, wherein the first porous layer comprises a plurality of pores extending through a thickness of the first porous layer; a first semiconductor material disposed in the plurality of pores to form a patterned first semiconductor layer; and a second semiconductor layer disposed on the first porous layer and the patterned first semiconductor layer, wherein the patterned first semiconductor layer is substantially transparent. Method of making a photovoltaic device is also provided.
摘要:
In one aspect of the present invention, a photovoltaic device is provided. The photovoltaic device includes a first semiconductor layer; a p+-type semiconductor layer; and an interlayer interposed between the first semiconductor layer and the p+-type semiconductor layer, wherein the interlayer includes magnesium and tellurium.
摘要翻译:在本发明的一个方面,提供一种光电器件。 光电器件包括第一半导体层; p +型半导体层; 以及介于所述第一半导体层和所述p +型半导体层之间的夹层,其中所述中间层包括镁和碲。
摘要:
In one aspect of the present invention, a photovoltaic device having a down-converting layer is presented. The device includes a glass plate having a first surface and a second surface. The first surface is exposed to ambient radiation. A transparent conductive layer is disposed adjacent to the second surface of the glass plate. The device further includes a first type semiconductor layer disposed adjacent to the transparent conductive layer and a second type semiconductor layer disposed adjacent to the first type semiconductor layer. The down-converting layer is interposed between the second surface of the glass plate and the transparent conducting layer. The down-converting layer exhibits an effective refractive index that has a value between the respective refractive indices of the glass plate and the transparent conductive layer. A photovoltaic module having a plurality of such photovoltaic devices is also presented.