Abstract: The present invention is related to a method of providing n-doped group III-V materials grown on (111) Si, and especially to a method comprising steps of growth of group III-V materials interleaved with steps of no growth, wherein both growth steps and no growth steps are subject to a constant uninterrupted arsenic flux concentration.

Abstract: The roof-integrated solar panel of the disclosure comprises a mounting frame having a top side for facing away from a roof, a bottom side for facing toward the roof, an upper side for facing an upslope direction, a lower side for facing a downslope direction, a left side and a right side, a solar panel mounted within the mounting frame, and a plurality of nose vents in the lower side of the mounting frame, a plurality of flow-through vents in the upper side of the mounting frame, and a plurality of exhaust vents in the top side of the mounting frame at an upper edge of the upper side wherein air is drawn up through the nose vents and out through the exhaust vents to cool the solar panel.

Abstract: Roof-Integrated solar panels use junction boxes with short cables and connectors at opposite corners. Panel to panel connection is achieved by integrated hooks keeping the cable and connector at either end of the solar panel from touching the roof's decking or battens during installation. Row to row panel connections use simple or specialized jumper cables. The simple jumper cables connect the last solar panel in a row to the next or first solar panel in the next row. “Mini-String” panel group connections use jumper cable. A jumper cable is used to connect groups of roof-integrated panels into DC to DC power optimizers or DC to AC microinverters.

Abstract: The roof-integrated solar panel of the disclosure comprises a mounting frame having a top side for facing away from a roof, a bottom side for facing toward the roof, an upper side for facing an upslope direction, a lower side for facing a downslope direction, a left side and a right side, a solar panel mounted within the mounting frame, and a plurality of nose vents in the lower side of the mounting frame, a plurality of flow-through vents in the upper side of the mounting frame, and a plurality of exhaust vents in the top side of the mounting frame at an upper edge of the upper side wherein air is drawn up through the nose vents and out through the exhaust vents to cool the solar panel.

Abstract: Gradient optical density transmissive light directing devices (24, 26, 28, 30) and fabrication thereof are disclosed herein. Examples of such devices include concentrators, lenses and compound lenses. The present invention teaches a process for the fabrication of glass light transmitting devices having a chosen gradient in index of refraction either bidirectionally (radially and longitudinally relative to an optical axis) or in three dimensions. The present invention further describes the design of several interesting optical devices by particular choices of the gradient in the index of refraction thereof. Such articles have numerous uses in the optics, optical fiber and solar technology industries for the purposes of designing compound lens systems using a single, integral lens, coupling light into fibers and for concentrating and directing light from a source having a significant angular variation to an energy collecting and/or conversion devices such as a photovoltaic cell, to name but a few applications.