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MHT CET202619 April 2026Morning ShiftPhysicsSemiconductorsActual

The material used for solar cell should have band gap (A) equal to zero. (B) equal to 0.08 eV. (C) between 1.0 eV to 1.8 eV. (D) equal to 2 eV.

Options

  1. AD
  2. BA
  3. CC
  4. DB

Correct answer

C. C

Step-by-step solution

The solar spectrum has maximum intensity at an energy of about 1.5 eV. To maximize the absorption of solar radiation and the efficiency of the solar cell, the band gap of the semiconductor should be close to 1.5 eV. Commonly used materials for solar cells include Silicon ( E_g 1.1 eV) and GaAs ( E_g 1.43 eV). Therefore, the ideal band gap for a solar cell material is between 1.0 eV and 1.8 eV. Answer: C

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