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Because the space charge region or depletion region is small in germanium compared to silicon hence leakage current is more in germanium than silicon
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∙ 11y ago
The higher leakage current in germanium compared to silicon is mainly due to its lower bandgap energy, which allows more thermally generated carriers to flow through at room temperature. Additionally, germanium has lower electron mobility and higher intrinsic carrier concentration than silicon, contributing to increased leakage current.
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How do the features of germanium and silicon diodes compare to each other?
Germanium diodes have a lower forward voltage drop compared to silicon diodes, making them suitable for low voltage applications. However, they have higher leakage current and are more temperature sensitive. Silicon diodes, on the other hand, have higher forward voltage drop but are more stable over a wider temperature range and have lower leakage current.
Why silicon is preferred over germanium in the fabrication of p-n junction diode?
Silicon is preferred over germanium in the fabrication of p-n junction diodes because silicon has a higher bandgap energy, which allows for better temperature stability and leakage control. Silicon also has better electrical properties, such as higher breakdown voltage and lower intrinsic carrier concentration, making it more suitable for high-performance diode applications. Additionally, silicon is more abundant and cheaper to produce compared to germanium.
Why the temperature sensitivity of silicon is less than germanium?
The temperature sensitivity of silicon is less than germanium because silicon has a wider energy band gap than germanium. This wider band gap allows silicon to operate more efficiently at higher temperatures, resulting in less temperature-dependent changes in its electrical properties compared to germanium. Additionally, silicon has a higher thermal conductivity than germanium, which helps dissipate heat more effectively, reducing temperature effects on its performance.
Who has more protons neon or Silicon?
Neon has more protons than silicon. Neon has 10 protons, while silicon has 14 protons.
What are some names of metalloids?
The six commonly recognized metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium.
Why silicon has low leakage of current as compared to germanium?
Silicon has a higher bandgap energy than germanium, which results in a lower intrinsic carrier concentration and reduced leakage current. Additionally, silicon dioxide forms a more stable and protective oxide layer on silicon compared to germanium, further inhibiting current leakage.
How do the features of germanium and silicon diodes compare to each other?
Germanium diodes have a lower forward voltage drop compared to silicon diodes, making them suitable for low voltage applications. However, they have higher leakage current and are more temperature sensitive. Silicon diodes, on the other hand, have higher forward voltage drop but are more stable over a wider temperature range and have lower leakage current.
Why is silicon is preferred is germanium?
Silicon is actually preferred to germanium within the manufacture of semiconductor devices due to the following reasons:Silicon is cheap and abundantIn silicon, leakage current is less affected by temperature as compared to germanium.The leakage current in silicon is very very small as compared to germanium.The working temperature of silicon is more than that of germanium. The working junction temperature of silicon can go as high as 150C whereas the working junction temperature of germanium can only go as high as 60CSilicon dioxide is a stable insoluble solid that can be used both to electrically insulate circuitry and to passivate junctions preventing contamination (allowing use of inexpensive plastic packages), germanium dioxide is a crumbly water soluble solid (this requires all germanium devices to be packaged in expensive metal or glass hermetically sealed cases and making germanium integrated circuits almost impossible)
Why is the reverse saturation current of germanium diode more than silicon?
Germanium has four number of shells while Silicon has three number of shell. therefore for germanium less energy is required to move the electron from valence band to conduction band if compared to silicon. So at room temperature for germanium their are more number of electrons present in conduction bond hence more number of holes present in the valence energy band. Due to movement of holes reverse saturation current is produced. Their is more number of hole movement in germanium comparatively therefore reverse saturation current is more than silicon for germanium. You may refer to Electronic Devices and Circuits by Allen Mottershead Regards, Zain Ijaz UCTI, Malaysia Mechatronic Engineer.
Why would you use silicon diodes instead of germanium?
Though germanium diodes were the first ones fabricated, several factors make silicon the choice vs. germanium diodes. Silicon diodes have a greater ease of processing, lower cost, greater power handling, less leakage and more stable temperature characteristics than germanium diodes. Germanium diodes' lower forward drop (.2V to .3V versus .7V to 1.0V) make them better at small signal detection and rectification.
Why Silicon transistor are preferred to germanium transistors?
Silicon transistors are preferred to germanium transistors because they exhibit higher thermal stability and are less prone to temperature variations. Silicon transistors also have a higher maximum operating temperature, improved frequency response, and are more reliable in terms of long-term performance. Additionally, silicon is more abundant and easier to work with in manufacturing processes compared to germanium.
Why silicon is preferred over germanium in the fabrication of p-n junction diode?
Silicon is preferred over germanium in the fabrication of p-n junction diodes because silicon has a higher bandgap energy, which allows for better temperature stability and leakage control. Silicon also has better electrical properties, such as higher breakdown voltage and lower intrinsic carrier concentration, making it more suitable for high-performance diode applications. Additionally, silicon is more abundant and cheaper to produce compared to germanium.
Why silicon is most widely used instead of germanium?
Silicon is more abundant than germanium and can operate at higher temperatures, making it more suitable for a wider range of applications. Additionally, silicon has a higher bandgap energy, which results in lower leakage currents and allows for greater integration density in electronic devices.
What has more shells or rings germanium or silicon?
germanium
Why germanium is better than silicon?
products made by silicon are more stable than those made by germanium
Why is germanium more metallic than silicon?
Germanium has a smaller band gap compared to silicon, allowing it to conduct electricity more effectively. Its crystal structure also has a closer packing arrangement of atoms compared to silicon, making it more metallic in nature. Overall, these factors contribute to germanium exhibiting more metallic properties than silicon.
Why germanium has less barrier potential than silicon?
Germanium has a lower barrier potential than silicon due to its lower band gap energy. This results in more thermal noise and higher leakage currents in germanium compared to silicon, making silicon a more suitable material for modern semiconductor devices.
