Topic: Electronic Devices and Circuits
Select the value closest to the forbidden band in Germanium at 0K:
- A. 0.78 eV
- B. 1.00 eV
- C. 0.01 eV
- D. 1.21 eV
Answer: A. 0.78 eV
Explanation: The forbidden energy band gap of a semiconductor depends on temperature. For Germanium (Ge), the band gap energy is approximately 0.67 eV at room temperature (300K) and widens as temperature decreases, reaching about 0.78 eV at absolute zero (0K). By contrast, Silicon is approximately 1.21 eV at 0K.