A TV remote control emits IR light. If the detector on

Chapter 24, Problem 38GP

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A TV remote control emits IR light. If the detector on theTV set is not to react to visible light, could it make use of silicon as a “window" with its energy gap \(E_g = 1.12 \mathrm {eV}\)?What is the shortest-wavelength light that can strike silicon without causing electrons to jump from the valence band to the conduction band?

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