Implementations of the disclosed subject matter provide a window, an energy and light producing device including at least one transparent photovoltaic device and at least one non-transparent Organic Light Emitting Device (OLED) in an optical path of the window. A controller may control the operation of the non-transparent OLED of the energy and light producing device. An energy storage device may be electrically coupled to the controller and the energy and light producing device to store energy generated by the transparent photovoltaic device and to power the non-transparent OLED. In some implementations, a LED or OLED may be mounted in the frame of the window and may be powered by the energy storage device.

A solar cell includes a crystalline silicon substrate, a P-doped silicon oxide layer that is formed on a principal surface of the crystalline silicon substrate and that includes phosphorus as an impurity, and an amorphous silicon layer that includes an intrinsic amorphous silicon layer and a p-type amorphous silicon layer. The intrinsic amorphous silicon layer is formed on the P-doped silicon oxide layer. The p-type amorphous silicon layer is formed on the intrinsic amorphous silicon layer and includes a p-type dopant. The intrinsic amorphous silicon layer includes the p-type dopant. The concentration of the p-type dopant in the thickness direction of the intrinsic amorphous silicon layer has a profile higher than the concentration of the p-type dopant at the interface between the P-doped silicon oxide layer and the intrinsic amorphous silicon layer.

A photovoltaic module includes a solar cell module including multiple solar cells, and first and second conductive lines connected respectively to first and second solar cells among the solar cells, and a junction box attached to the solar cell module. The junction box includes a power conversion unit including a capacitor unit located between the first and second conductive lines, a converter unit to change the level of a DC voltage at opposite ends of the capacitor unit and to output the DC voltage, and a controller to control the converter unit. When shading occurs in some of the solar cells, the power conversion unit supplies a second current, the level of which is lower than the level of a first current supplied before shading occurs, whereby the possibility of generation of a hot spot may be reduced despite the absence of bypass diodes when shading occurs.

According to one embodiment, a solar device, comprises one or more photovoltaic cells disposed in an encapsulant and a light control structure including a louver film having a series of louver structures, wherein each louver structure includes one or more groupings of a plurality magnetizable particles aligned at least in a first orientation dispersed in a binding matrix. The light control structure substantially transmits light incident at a first angle and substantially limits transmission of light incident at a second angle. Each louver structure is spaced apart from an adjacent louver structure, wherein each louver structure is substantially aligned in a plane substantially parallel to an adjacent louver structure.

A laminated and etched glazing unit having a substrate and a multi-layered interference filter each delimited by two main faces; the incident medium having a refractive index n.sub.inc=1, the substrate having a refractive index n.sub.substrate defined as: 1.45n.sub.substrate1.6 at 550 nm, and the exit medium being defined as follows 1.45n.sub.exit1.6 at 550 nm; and wherein the following requirements are met: The saturation of the colour is higher than 8 at near-normal angle of reflection, except for grey and brown; the visible reflectance is higher than 4%; the variation of the dominant wavelength .sub.MD of the dominant colour M.sub.D of the reflection is smaller than 15 nm for .sub.r<60; and the total hemispherical solar transmittance is above 80%.

Assembly method of a photovoltaic panel with back-contact solar cells of crystalline silicon, which provides to print ECA adhesive directly on the contacts of the cells and to immediately load and pre-fix the printed cells. The method includes a macro-phase including operating sub-phases, simultaneous and coordinated with respect to each other: a first sub-phase of oriented loading of the cells with the contacts facing upwards on a mobile tray, a second sub-phase of silkscreen printing of ECA on the contacts, a third sub-phase of control of the laying carried out and of optional re-positioning of the screen, a fourth sub-phase of overturning of the printed cells, a fifth sub-phase of oriented transport of a string of cells up to positioning, a sixth sub-phase of pre-fixing. An automatic assembly plant is also disclosed having a combined station that allows for execution of the macro-phase.

One embodiment described herein provides a photovoltaic roof module. The roof module can include at least a first photovoltaic roof tile, a second photovoltaic roof tile positioned adjacent to the first photovoltaic roof tile, and a spacer coupled to and positioned between the first and second photovoltaic roof tiles. The spacer is configured to facilitate a semi-rigid joint between the first and second photovoltaic roof tiles.

A solar cell module includes: a solar cell comprising a perovskite solar cell; a first encapsulating material and a second encapsulating material for sealing the solar cell; a first protective member positioned on the first encapsulating material; a second protective member positioned on the second encapsulating material; and a third encapsulating material positioned on a side surface of the first encapsulating material and the second encapsulating material. The water vapor transmission rate (WVTR) of the third encapsulating material is less than the WVTR of the second encapsulating material, and the WVTR of the second encapsulating material is less than the WVTR of the first encapsulating material. Thus, it is possible to obtain the effects of securing the conversion efficiency of the solar cell module against degradation and securing reliability of the solar cell module.

A glass building material according to the present disclosure includes: a first photovoltaic string of a bifacial light-receiving type which has a shape extending in one direction; a second photovoltaic string of a bifacial light-receiving type which is arranged next to the first photovoltaic string in a width direction, and which has a shape extending in the one direction; a first glass substrate which is configured to cover one surface of the first photovoltaic string and one surface of the second photovoltaic string; and a reflective film which is arranged on at least part of another surface side of the first photovoltaic string and another surface side of the second photovoltaic string, which has a transmittance higher than a reflectance in a visible light region, and which has a reflectance higher than a transmittance in a near-infrared region.