Photovoltaic devices protected from environment
A photovoltaic module includes a first photovoltaic cell, a second photovoltaic cell, and a transparent barrier disposed over the first photovoltaic cell and the second photovoltaic cell. The transparent barrier includes least one inorganic layer and at least one electrical conductor which electrically connects the first photovoltaic cell to the second photovoltaic cell. The transparent barrier may include a flexible sheet, web, foil or ribbon containing at least one glassy layer.
1 . A photovoltaic module, comprising
a first photovoltaic cell;
a second photovoltaic cell;
a transparent barrier disposed over the first photovoltaic cell and the second photovoltaic cell, wherein:
the transparent barrier comprises at least one inorganic layer and at least one electrical conductor which electrically connects the first photovoltaic cell to the second photovoltaic cell.
2 . The photovoltaic module of claim 1 , wherein:
the at least one inorganic layer comprises a flexible sheet, web, foil or ribbon supporting the at least one electrical conductor; and
the at least one electrical conductor comprises an electrically conductive wire or trace.
3 . The photovoltaic module of claim 2 , wherein the at least one inorganic layer comprises at least one glassy layer.
4 . The photovoltaic module of claim 3 , wherein the at least one glassy layer comprises at least one sputtered glassy layer.
5 . The photovoltaic module of claim 4 , further comprising a flexible polymer layer supporting the at least glassy layer and the at least one electrically conductive wire or trace.
6 . The photovoltaic module of claim 3 , wherein the at least one inorganic layer comprises a self-supporting flexible glassy layer.
7 . The photovoltaic module of claim 2 , wherein the transparent barrier comprises a collector-connector adapted to collect current from the first photovoltaic cell and which electrically connects the first photovoltaic cell to the second photovoltaic cell.
8 . The photovoltaic module of claim 2 , wherein the first and the second photovoltaic cells comprise plate shaped cells which are located adjacent to each other and wherein the transparent barrier is laminated to the first and second photovoltaic cells.
9 . The photovoltaic module of claim 8 , further comprising an adhesive layer that adheres the transparent barrier to the first and second photovoltaic cells.
10 . The photovoltaic module of claim 8 , wherein each of the first and the second photovoltaic cells comprises a transparent first polarity electrode adapted to face the Sun and the transparent barrier is laminated to the first polarity electrode of each of the first and second photovoltaic cells.
11 . The photovoltaic module of claim 8 , wherein the first and the second photovoltaic cells comprise flexible photovoltaic cells.
12 . A photovoltaic device, comprising:
a photovoltaic cell, comprising:
a transparent first polarity electrode adapted to face the Sun,
a substrate comprising a second polarity electrode adapted to face away from the Sun, and
a photovoltaic material disposed between the first and second polarity electrodes; and
a transparent barrier comprising a flexible sheet, web, foil or ribbon comprising at least one glassy layer supporting the at least one electrical conductor, wherein the transparent barrier is laminated to the photovoltaic cell so that the at least one electrical conductor electrically contacts the first polarity electrode.
13 . The photovoltaic cell of claim 12 , wherein the at least one electrical conductor comprises at least one electrically conductive wire or trace.
14 . The photovoltaic cell of claim 12 , wherein the at least one glassy layer comprises at least one sputtered glassy layer.
15 . The photovoltaic cell of claim 14 , wherein the transparent barrier further comprises a flexible polymer layer supporting the at least one glassy layer and the at least one electrical conductor.
16 . The photovoltaic cell of claim 15 , further comprising an encapsulating layer disposed over the transparent barrier.
17 . The photovoltaic cell of claim 14 , wherein the at least one glassy layer comprises a self-supporting flexible glassy layer.
18 . The photovoltaic cell of claim 12 , further comprising an adhesive layer adhering the transparent barrier to the first polarity electrode.
19 . A method of making a photovoltaic device comprising
providing a photovoltaic cell comprising
a transparent first polarity electrode,
a second polarity electrode, and
a photovoltaic material disposed between the first polarity electrode and the second polarity electrode;
providing a transparent protective barrier comprising at least one inorganic layer and at least one electrical conductor; and
laminating the transparent protective barrier to the first polarity electrode so that the at least one conductor electrically contacts the first polarity electrode.
20 . The method of claim 19 , wherein the providing the transparent protective barrier comprises:
providing a flexible polymer layer having a first surface and a second surface,
depositing at least one inorganic layer over the first surface of the flexible polymer layer; and
depositing at least one electrically conductive wire or trace on the second surface of the second surface of the polymer layer.