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Results 971 - 980 of 4398 for Electrical devices
  • Article - 7 Jan 2002
    One of the barriers to wide spread acceptance of solar energy is the cost of photovoltaic systems. This article looks at ways these costs can be reduced such as capital costs, deposition rates, other...
  • Article - 4 Jan 2002
    Gallium arsenide is suited to use in solar cells due to its 1.43eV band gap, high absorptivity, insensitivity to heat and resistance to radiation damage. Drawbacks, opprtunities, high-efficiency...
  • Article - 4 Jan 2002
    Copper Indium Diselenide (CuInSe2) is an alternative material for use in photovoltaics to amorphous silicon. It currently has the highest solar cell efficiency. Research areas being pursued involving...
  • Article - 4 Jan 2002
    Cadmium telluride (CdTe) is an alternative materials for use in photovoltaics currently under investigation. Areas of reserach are outlined.
  • Article - 4 Jan 2002
    Photovoltaics (PV) or solar cells are becoming more widely accepted for applications that can be grouped into categories including, PV with battery storage, PV with generators, PV connected to...
  • Article - 4 Jan 2002
    The photovoltaic or solar cell is the basic building block of a photovoltaic system. Several cells make up a module and several modules make up an array. This article explains why arrays are needed to...
  • Article - 4 Jan 2002
    This article briefly looks at where photovoltaics came from. From its discovery, to use in spacecraft, semiconductors and renewed interest as an alternative energy source.
  • Article - 4 Jan 2002
    This article discusses photovaltaics (PV) and how they work.
  • Article - 18 Dec 2001
    Marignac first isolated gadolinia, an oxide of gadolinium (Gd), in 1880. Then, in 1886, Lecoq de Boisbaudran successfully separated the element from Mosander’s “yttria.”
  • Article - 18 Dec 2001
    Europium (Eu) is part of the lanthanide series of elements. Demarcay discovered this element in 1901, and succeeded in isolating it in a fairly pure form from the earth.

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