TS EAMCET · Physics · Semiconductors
Assertion (A) Si and GaAs are the preferred materials for solar cells. Reason (R) Both these materials have energy band gaps much below the energy level corresponding to the maximum solar irradiance ln the solar spectrum. The correct answer is
- A \((A)\) is correct but \((R)\) is incorrect.
- B Both (A) and (R) are correct and (R) is the correct explanation of (A).
- C Both \((A)\) and \((R)\) are correct but \((R)\) is not the correct explanation of (A).
- D Both (A) and (R) are incorrect.
Answer & Solution
Correct Answer
(A) \((A)\) is correct but \((R)\) is incorrect.
Step-by-step Solution
Detailed explanation
Key Idea The energy band gap of Si is \(1.14 \mathrm{eV}\) and GaAs is \(1.42 \mathrm{eV}\). Both Si and GaAs are used to make solar cells. In visible spectrum, energy is vary from about \(3 \mathrm{eV}\) on the violet side to \(1.5 \mathrm{eV}\) on red side, so visible light…
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