Abstract: There is provided a multi-junction photovoltaic device comprising a first sub-cell disposed over a second sub-cell, the first sub-cell comprising a photoactive region comprising a layer of perovskite material and the second sub-cell comprising a silicon heterojunction (SHJ).

Abstract: There is provided a multi-junction photovoltaic device comprising a first sub-cell disposed over a second sub-cell, the first sub-cell comprising a photoactive region comprising a layer of perovskite material and the second sub-cell comprising a silicon heterojunction (SHJ).

Abstract: An emergency vehicle foldable barrier assembly for protecting law enforcement, emergency workers, and others near vehicles pulled over on the road shoulder includes a rear barrier apparatus and a side barrier apparatus. The rear barrier apparatus comprises a rear mounting plate and a rear hinge configured to mount to a trunk end of an emergency vehicle adjacent a driver's side. A rear barrier bar is coupled to the rear hinge and has a curved portion configured to conform to the curvature of the trunk end. A plurality of rear lights is coupled to the rear barrier bar. The side barrier apparatus comprises a side mounting plate and a side hinge configured to mount to the driver's side of the emergency vehicle proximal the trunk end. A side barrier bar is coupled to the side hinge. A plurality of side lights is coupled to the side barrier bar.

Abstract: There is provided a multi-junction photovoltaic device (100) comprising a first sub-cell (110) disposed over a second sub-cell (120), the first sub-cell comprising a photoactive region comprising a layer of perovskite material and the second sub-cell comprising a silicon heterojunction (SHJ).

Abstract: A sortation system and method of sorting product includes providing a sorter assembly and a supply system supplying product that is received by the sorter assembly. Product supplied to the sorter assembly is monitored and a parameter is determined that is indicative of the relationship between product supplied to the sorter assembly and product being sorted by the sorter assembly. The supply system is controlled as a function of a value of the parameter.