摘要:
Certain examples relate to improved methods for making patterned substantially transparent contact films, and contact films made by such methods. In certain cases, the contact films may be patterned and substantially planar. Thus, the contact films may be patterned without intentionally removing any material from the layers and/or film, such as may be required by photolithography. In certain example embodiments, an oxygen exchanging system comprising at least two layers may be deposited on a substrate, and the layers may be selectively exposed to heat and/or energy to facilitate the transfer of oxygen ions or atoms from the layer with a higher enthalpy of formation to a layer with a lower enthalpy of formation. In certain cases, the oxygen transfer may permit the conductivity of selective portions of the film to be changed. This advantageously may result in a planar contact film that is patterned with respect to conductivity and/or resistivity.
摘要:
Certain example embodiments of this invention relate to patterned glass that can be used as a cylindrical lens array in a concentrated photovoltaic application, and/or methods of making the same. In certain example embodiments, the lens arrays may be used in combination with strip solar cells and/or single-axis tracking systems. That is, in certain example embodiments, lenses in the lens array may be arranged so as to concentrate incident light onto respective strip solar cells, and the entire assembly may be connected to a single-axis tracking system that is programmed to follow the East-West movement of the sun. A low-iron glass may be used in connection with certain example embodiments. Such techniques may advantageously help to reduce cost per watt related, in part, to the potentially reduced amount of semiconductor material to be used for such example embodiments.
摘要:
Certain example embodiments of this invention relate to patterned glass that can be used as a cylindrical lens array in a concentrated photovoltaic application, and/or methods of making the same. In certain example embodiments, the lens arrays may be used in combination with strip solar cells and/or single-axis tracking systems. That is, in certain example embodiments, lenses in the lens array may be arranged so as to concentrate incident light onto respective strip solar cells, and the entire assembly may be connected to a single-axis tracking system that is programmed to follow the East-West movement of the sun. A low-iron glass may be used in connection with certain example embodiments. Such techniques may advantageously help to reduce cost per watt related, in part, to the potentially reduced amount of semiconductor material to be used for such example embodiments.
摘要:
A photovoltaic device including a rear electrode which may also function as a rear reflector. In certain example embodiments of this invention, the rear electrode includes a metallic based reflective film that is oxidation graded, so as to be more oxided closer to a rear substrate (e.g., glass substrate) supporting the electrode than at a location further from the rear substrate. In other words, the rear electrode is oxidation graded so as to be less oxided closer to a semiconductor absorber of the photovoltaic device than at a location further from the semiconductor absorber in certain example embodiments. In certain example embodiments, the interior surface of the rear substrate may optionally be textured so that the rear electrode deposited thereon is also textured so as to provide desirable electrical and reflective characteristics. In certain example embodiments, the rear electrode may be of or include Mo and/or MoOx, and may be sputter-deposited using a combination of MoOx and Mo sputtering targets.
摘要:
A photovoltaic device (e.g., solar cell) includes: a front substrate (e.g., glass substrate); a semiconductor absorber film; a back contact including a first conductive layer of or including copper (Cu) and a second conductive layer of or including molybdenum (Mo); and a rear substrate (e.g., glass substrate). The first conductive layer of or including copper is located between at least the rear substrate and the second conductive layer of or including molybdenum, and wherein the semiconductor absorber film is located between at least the back contact and the front substrate.
摘要:
Certain example embodiments of this invention relate to patterned glass that can be used as a cylindrical lens array in a concentrated photovoltaic application, and/or methods of making the same. In certain example embodiments, the lens arrays may be used in combination with strip solar cells and/or single-axis tracking systems. That is, in certain example embodiments, lenses in the lens array may be arranged so as to concentrate incident light onto respective strip solar cells, and the entire assembly may be connected to a single-axis tracking system that is programmed to follow the East-West movement of the sun. A low-iron glass may be used in connection with certain example embodiments. Such techniques may advantageously help to reduce cost per watt related, in part, to the potentially reduced amount of semiconductor material to be used for such example embodiments.
摘要:
Certain examples relate to improved methods for making patterned substantially transparent contact films, and contact films made by such methods. In certain cases, the contact films may be patterned and substantially planar. Thus, the contact films may be patterned without intentionally removing any material from the layers and/or film, such as may be required by photolithography. In certain example embodiments, an oxygen exchanging system comprising at least two layers may be deposited on a substrate, and the layers may be selectively exposed to heat and/or energy to facilitate the transfer of oxygen ions or atoms from the layer with a higher enthalpy of formation to a layer with a lower enthalpy of formation. In certain cases, the oxygen transfer may permit the conductivity of selective portions of the film to be changed. This advantageously may result in a planar contact film that is patterned with respect to conductivity and/or resistivity.
摘要:
Certain example embodiments of this invention relate to an electrode (e.g., front electrode) for use in a photovoltaic device or the like. In certain example embodiments, a transparent conductive oxide (TCO) of the front electrode for use in a photovoltaic device is of or includes titanium oxide doped with one or more of Nb, Zn and/or Al. Additional layers may also be provided in the front electrode in certain example embodiments. It has been found that the use of transparent conductive TiOx(:Nb) or TiZnOx(:Al and/or Nb), in a front electrode of a photovoltaic device, is advantageous in that such materials have a high refractive index (n) and have a higher transparency than conventional titanium suboxide (TiOx). Thus, the use of such materials in the context of a front electrode of a photovoltaic device reduces light reflection due to the high refractive index, and increases transmission into the active semiconductor film due to the higher transmission characteristics thereof, thereby improving the efficiency of the device.
摘要:
Certain example embodiments of this invention relate to patterned glass that can be used as a cylindrical lens array in a concentrated photovoltaic application, and/or methods of making the same. In certain example embodiments, the lens arrays may be used in combination with strip solar cells and/or single-axis tracking systems. That is, in certain example embodiments, lenses in the lens array may be arranged so as to concentrate incident light onto respective strip solar cells, and the entire assembly may be connected to a single-axis tracking system that is programmed to follow the East-West movement of the sun. A low-iron glass may be used in connection with certain example embodiments. Such techniques may advantageously help to reduce cost per watt related, in part, to the potentially reduced amount of semiconductor material to be used for such example embodiments.
摘要:
A photovoltaic device including a rear electrode which may also function as a rear reflector. In certain example embodiments of this invention, the rear electrode includes a metallic based reflective film that is oxidation graded, so as to be more oxided closer to a rear substrate (e.g., glass substrate) supporting the electrode than at a location further from the rear substrate. In other words, the rear electrode is oxidation graded so as to be less oxided closer to a semiconductor absorber of the photovoltaic device than at a location further from the semiconductor absorber in certain example embodiments. In certain example embodiments, the interior surface of the rear substrate may optionally be textured so that the rear electrode deposited thereon is also textured so as to provide desirable electrical and reflective characteristics. In certain example embodiments, the rear electrode may be of or include Mo and/or MoOx, and may be sputter-deposited using a combination of MoOx and Mo sputtering targets.