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  2. Theory of solar cells - Wikipedia

    en.wikipedia.org/wiki/Theory_of_solar_cells

    [8] [9] Macro-architecture of the solar cells could result in different surface areas being placed in any fixed volume - particularly for thin film solar cells and flexible solar cells which may allow for highly convoluted folded structures. If volume is the binding constraint, then efficiency density based on surface area may be of less relevance.

  3. Multi-junction solar cell - Wikipedia

    en.wikipedia.org/wiki/Multi-junction_solar_cell

    The favorable values in the table below justify the choice of materials typically used for multi-junction solar cells: InGaP for the top sub-cell (E g = 1.8–1.9 eV), InGaAs for the middle sub-cell (E g = 1.4 eV), and Germanium for the bottom sub-cell (E g = 0.67 eV). The use of Ge is mainly due to its lattice constant, robustness, low cost ...

  4. Solar panel - Wikipedia

    en.wikipedia.org/wiki/Solar_panel

    Solar array mounted on a rooftop. A solar panel is a device that converts sunlight into electricity by using photovoltaic (PV) cells. PV cells are made of materials that produce excited electrons when exposed to light.

  5. Solar energy conversion - Wikipedia

    en.wikipedia.org/wiki/Solar_energy_conversion

    Solar cells started in 1876 with William Grylls Adams along with an undergraduate student of his. A French scientist, by the name of Edmond Becquerel, first discovered the photovoltaic effect in the summer of 1839. [7] He theorized that certain elements on the periodic table, such as silicon, reacted to the exposure of sunlight in very unusual ...

  6. Index notation - Wikipedia

    en.wikipedia.org/wiki/Index_notation

    A vector treated as an array of numbers by writing as a row vector or column vector (whichever is used depends on convenience or context): = (), = Index notation allows indication of the elements of the array by simply writing a i, where the index i is known to run from 1 to n, because of n-dimensions. [1]

  7. Man charged with mother's murder after body found in bog - AOL

    www.aol.com/man-charged-mothers-murder-body...

    A 31-year-old man has been charged with murdering his mother in the Republic of Ireland. The body of Mirjana Pap, 58, was found in a bog close to Clonark in County Roscommon on Monday.

  8. Solar car - Wikipedia

    en.wikipedia.org/wiki/Solar_car

    The solar array consists of hundreds of solar cells converting sunlight into electricity. In order to construct an array, PV cells are placed together to form modules which are placed together to form an array. [8] The larger arrays in use can produce over 2 kilowatts (2.6 hp). Cells, modules, and arrays. The solar array can be mounted in six ways:

  9. Costco eggs recalled were given a recall of the highest level by the Food and Drug Administration for potential contamination with salmonella.