Separation layers, usable in devices for converting radiation energy to electrical energy, allow at least some of the components of the devices to be separated from one another for disposal thereof. A separation layer may be interposed between and bonded to adjoining layers, and when acted upon by application of an external source, may be degraded to release the layers from one another. Once released, the layers may be disposed of more efficiently and economically, including proper disposal of hazardous waste, and recycling of materials which may be re-usable.