NOVELTY - The method comprises forming an integral preformed edge (115) on a first glass substrate, positioning an active layer (120) on the first substrate, laminating a polymer film (130) to the active layer, the first substrate and/or a second glass substrate, positioning a second substrate in close contact with the active layer, leaving a gap (150) between preformed edge and an edge of the active layer, adding a seal material to the gap, and applying an energy source to heat and flow the seal material to folly fill the gap for forming a seal (170).    USE - The method is useful for sealing an active layer of solar cell, solar cell contact, organic photovoltic device, plasma display devices, nanocrystal display, electrochromic device, electrochromic material system, suspended particle device, microblind, liquid crystal device, smart window, switchable window, smart glass, electronic glass, LED, semiconductor electronic device, future electron device, organic LED, LCD, digital light processor, fluidic logic device, interferometric modulation display, thick-film dielectric electroluminescent structures, quantum-dot LED, time multiplexed optical shutter, touch panel display, liquid-crystal lens, low power device or organic light-emitting transistors (claimed) and windows for architectural and automotive applications.    ADVANTAGE - The method is capable of energy efficiently, rapidly and hermatically sealing the active layer without contamination and damage thus allowing high working temperature range and maintaining improved resistance to ambient conditions such as wind, rain, physical abrasion and degradation due to freeze-thaw cycles or other temperature extremes.    DETAILED DESCRIPTION - The method comprises forming an integral preformed edge (115) on a first glass substrate, positioning an active layer (120) on the first substrate, laminating a polymer film (130) to the active layer, the first substrate and/or a second glass substrate, positioning a second substrate in close contact with the active layer, leaving a gap (150) between preformed edge and an edge of the active layer, adding a seal material to the gap, applying an energy source to heat and flow the seal material to folly fill the gap for forming a seal (170), and applying the first substrate material to the top substrate and firing the material to sinter it for forming an integral preformed edge. The energy source is: localized and consists of ultrasound, visible light, ultraviolet light, broadband infrared, laser and/or induction; and dispersed and consists of thermal heating, magnetic induction heating, convection furnace, and eddy currents. The preformed edge and the first substrate are formed by properly cutting and shaping a sufficiently thick block of substrate material to become preformed edge integral with top substrate. The firing step is undertaken during a tempering cycle. The substrates are same or different, and consist of glass, coated glass, ceramic or metal. The coating is provided by a procedure consists of sputtering, chemical vapor deposition and/or reduction from metallic salts. INDEPENDENT CLAIMS are included for:    (1) a photovoltaic device;    (2) a method of forming a photovoltaic device; and    (3) a sealant material system for joining inorganic substrates to form a hermetic seal protecting an electronic active layer and in a photovoltaic device upon application of a concentrated energy source.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a sealed electronic device.    Integral preformed edge (115)    Active layer (120)    Polymer film (130)    Gap (150)    Seal. (170)