they emit heat when their is a recombination of electron and holes
The maximum spectral response of germanium is in the infrared region, while the maximum spectral response of silicon is in the visible light region. Germanium has a broader spectral response range compared to silicon.
A germanium diode has a lower forward voltage drop compared to a silicon diode, typically around 0.3V for germanium and 0.7V for silicon. Germanium diodes also have a higher reverse current leakage compared to silicon diodes.
Germanium has a smaller bandgap compared to silicon, leading to higher intrinsic carrier concentration and hence greater leakage current. Additionally, germanium has a higher intrinsic carrier mobility, which can further contribute to increased leakage current compared to silicon.
The knee voltage for silicon is approximately 0.7V, while for germanium it is around 0.3V. The knee voltage is the voltage at which a diode starts conducting significantly.
A silicon diode has a voltage drop of approximately 0.7V, while a germanium diode has a voltage drop of approximately 0.3V. Though germanium diodes are better in the area of forward voltage drop, silicon diodes are cheaper to produce and have higher breakdown voltages and current capabilities.
The maximum spectral response of germanium is in the infrared region, while the maximum spectral response of silicon is in the visible light region. Germanium has a broader spectral response range compared to silicon.
I agree with Binitha on the point that Silicon is an indirect band gap semiconductor.
Germanium is not used in integrated circuits. Silicon is.
Silicon and Germanium are the elements used in transistors
germanium
germanium
Yes,silicon and germanium are semiconductors.
Silicon (Si) and Germanium (Ge) do not emit light because they are indirect bandgap materials. This means that when they are excited, most of the electrons and holes recombine through phonon-mediated transitions, resulting in the release of heat instead of light. In contrast, direct bandgap materials, such as gallium arsenide (GaAs), release light when electrons and holes recombine.
The metalloids are Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, and Polonium.
Silicon is opaque to all light (IR through UV).The bandgap of silicon is not high enough to produce visible photons, only IR photons.
silicon and germanium
silicon and germanium