الفهرس 
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Abstract
Bre such that redu=tion of solar cell There are two a:._-_a:_-es to MaKe solar cell arrays cheaper,the ’first is based on t-e :e=-nological development of new matrials ’or the production of s--Iar cells.Hydrogenerated amorphous silicon ias proved to be a pctentially useful material for this purpose. ’he second apmroa=- is to reduce the area of solar cells by :he tse of light conce-,:-ators.It is not clear at this time as to what .s the optimum ccmc-nation of solar cell design and concentration -atio. However, the cost tradeoff of present concentrating systems areas of 1000:1 appears to be economical frc- tee point of view of both Boller cost and energy payback ratio (usefL,’L energy recieved from photovoltaic system over its life divided by the energy expended in manufacturing the sys
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tern). However. operation under concentrated sunlight impose--, cert¬ain conditions on solar design and performance. T--= puprousE.-~ of this thesis is to Study the performance of the solar cell