摘要:
A photovoltaic cell includes a light-directing optical element integrally formed in an encapsulant layer thereof in the region of opaque current-collecting gridlines.The optical element redirects light which would be absorbed by the opaque structure to other regions of the photovoltaic device, thereby decreasing shading effects.
摘要:
A photovoltaic device which is resistant to shunt and short circuit defects developing between the opposed electrodes thereof. The photovoltaic device comprises an electrically conductive substrate, a semiconductor body including a photogenerative region, a layer of transparent conductive material, and means for collecting photogenerated current. In particular, a layer of low-conductivity material is operatively positioned between the layer of transparent conductive material and the collecting means, thereby resistively restricting the flow of electric current through short circuit portions. A method of fabricating such a shunt-resistant photovoltaic device is also disclosed.
摘要:
A wireless, monolithic photovoltaic module. The module includes top and bottom, rectangular electrodes with a photovoltaic body and an adjacent insulating strip sandwiched in between the electrodes, the insulating strip being disposed proximate the edge of the bottom electrode. A bus bar overlies the insulating strip, but not the photovoltaic body, and is connected to a net of current carrying grid lines which overlie the photovoltaic body to form a current collector. A top encapsulating layer has diffractive grooves formed therein which overlie the grid lines to minimize shading effects otherwise caused by shadows from the grid lines.
摘要:
Large area, thin-film body of photovoltaic material is subdivided into a plurality of small area devices. Through a selective etching process, a portion of the bottom electrode of each small area device is exposed. A metallic contact member is deposited upon the exposed portion of the electrode and a series connection between adjoining cells is established by interconnecting the metallic contact member of a first cell with the top electrode of an adjoining cell, so as to provide a large-area photovoltaic device including a plurality of interconnected sub-cells.
摘要:
A large area, high current, low voltage photovoltaic module including a common bottom electrode upon which a means adapted to collect and transport photogenerated current is disposed. By electrically interconnecting a plurality of said large area modules in series, the voltage obtained therefrom can be added so as to obtain any desired voltage output therefrom.
摘要:
An electronic device of the type including a thin film body having a superposed electrode has short circuit defects therein passivated by a conversion process in which the electrical resistivity of the electrode material is increased proximate the defect regions. Conversion is accomplished by exposing the electrode material to a conversion reagent and activating the reagent proximate the defect regions. The process may be utilized for a variety of differently configured devices, and may be readily adapted for use in a roll-to-roll device fabrication process.
摘要:
An improved photovoltaic device in which an electrically conductive adhesive is employed to affix the grid structure to the upper electrode thereof. By appropriately selecting the resistivity of the conductive adhesive, normal photogenerated current flow is readily accommodated, while shunted current flow, through patent or latent defects is substantially eliminated.
摘要:
A light transmissive power generating photovoltaic device (14) includes a power generating film having a substrate (30), a plurality of semiconductor layers (30, 32, 34) and a transparent conductive oxide layer (37) with a grid adhered on the top surface thereof. Apertures (42) pass through the opaque semiconductive layers to let light pass through. The power generating film is laminated onto a transparent glass sheet (24, 26) on each side to form the photovoltaic device.
摘要:
A method of severing a thin film semiconductor device. The semiconductor device includes a substrate having a first electrode region formed thereon, a semiconductor body formed of layers of thin film semiconductor alloy material disposed upon the base electrode, a transparent, electrically conductive second electrode deposited atop the semiconductor body, and a containment layer of polymeric material associated with the first or second electrode in at least one region to permit subsequent severing of the device into a plurality of devices through said containment layer region.
摘要:
A solar panel assembly (10) includes a power generating sheet (22) having two output terminals (30,32), and an electric cable (20) soldered at one end to terminals (30) and (32). A frame member is anchored to the solar panel in overlying relation to the terminals and an epoxy material (62) fills a cavity (58) defined by the frame member (40). A case (42) covers the frame member (40). The case includes an upper member (44) and a lower member (46) which are snap fitted together through apertures in the solar panel. The case (42) includes a tension relieving device which prevents tension on the cable (20) from being transferred to the cable end connected to the terminals (30) and (32). The epoxy provides a water resistant seal which allows the solar panel to be used in hostile environments.