NOVELTY - A photovoltaic device (100) comprises a photovoltaic element (102) having an active face (104) and an operating wavelength range; a polymer structure (108) having a bottom surface (110) disposed on the active face of the photovoltaic element and a top surface (112); and several granules (120) disposed on the top surface of the polymer structure. The granules are made of glass; or made of quartz, sand, a non-vitreous ceramic or polymeric material. The polymer structure is a single layer of polymer.    USE - As photovoltaic device in photovoltaic roofing elements used in roofs (claimed); and in electrical power generation.    ADVANTAGE - The roofs including the photovoltaic devices and photovoltaic roofing elements are configured to have aesthetically desirable appearance while retaining high photovoltaic efficiency. The device has more controllable and desirable aesthetics for use in roofing applications while retaining sufficient efficiency in electrical power generation. The device can be configured to match, harmonize and/or complement a desired type of roofing material. The roofs prepared by using the roofing element containing the photovoltaic device is aesthetically pleasing yet generates greater photovoltaic power.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) an array of photovoltaic devices;    (2) a photovoltaic roofing element comprising the photovoltaic device disposed on or within a roofing substrate, where the roofing substrate is a roofing shingle, tile, panel, membrane or shake;    (3) an array of photovoltaic roofing elements;    (4) a roof comprising at least one photovoltaic device disposed on a roof deck;    (5) a photovoltaic roofing element comprising a roofing substrate having a top face and a bottom face; a photovoltaic element disposed on the top face of or within the roofing substrate, leaving an exposed area on the top face of the roofing substrate, where the photovoltaic element has an operating wavelength range and an active face and the active face has an active area and an inactive area; a polymer structure having a bottom surface disposed on the exposed area on the top face of the roofing substrate, and a top surface; and several granules disposed on the top surface of the polymer structure. The photovoltaic roofing element further comprises a second polymer structure having a bottom surface disposed on the active face of the photovoltaic element, and a top surface; and a second several granules disposed on the top surface of the second polymer structure;    (6) a roof comprising at least one photovoltaic roofing element disposed on a roof deck;    (7) a granule coated polymer structure comprising: a polymer structure having a bottom surface and a top surface; and several granules disposed on the top surface of the polymer structure, where the combination of the granules and the polymer structure has at least about 40% energy transmissivity of solar radiation in the 400-750 nm wavelength range, the 650-1000 nm wavelength range, or the 450-1150 nm wavelength range; and    (8) modifying a surface of a photovoltaic device involving: disposing on the surface of the photovoltaic device a polymer structure, where the polymer structure has a bottom surface and a top surface, where the bottom surface is disposed on the surface of the photovoltaic device and the top surface has granules disposed on it.    DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of photovoltaic device.    Photovoltaic device (100)    Photovoltaic element (102)    Active face of photovoltaic element (104)    Polymer structure (108)    Bottom surface of polymer structure (110)    Top surface (112)    Granules. (120)