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What are the ideal materials for fabrication of solar cell? and give the criteria for selection. |
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Answer» Solution :Semiconductor with band gap close to 1.5 eV are ideal materials for SOLAR cell fabrication. These materials are as follows: `Si (E_(g)=1.1eV)`, GaAs`(E_(g)=1.43eV)`, CdTE `(E_(g)=1.45eV)`, CuIn`Se_(2)(E_(g)=1.04eV)` etc. semiconductors. The following are the important criteria for selecting the right materials for fabrication solar cell. (1) Band gap `E_(g)` about 1.0eV to 1.8eV. (2) High optical absorption about `10^(-4)CM^(-1)` (3) The electrical conductivity should be high. (4) The raw material should be easily AVAILABLE and (5) The cost should be lower. |
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