Why silicon is more used than germanium?

Why silicon is more used than germanium?

Silicon crystals have fewer free electrons than germanium crystals at room temperature, which is why silicon crystals are used for semiconductor devices. In general, the ICBO of germanium is 10-100 times greater than that of silicon, but the variation of ICBo at any temperature is lower for silicon than for germanium.

Why do we prefer silicon for transistors?

Silicon is used for electronic devices because it is an element with very special properties. Silicon’s electrical properties can be modified through a process called doping. These characteristics make it an ideal material for making transistors that amplify electrical signals.

Which is better silicon and germanium?

Why is Silicon preferred over Germanium for semiconductor? The reason is, Silicon can be worked at a higher temperature as compared to germanium. The structure of Germanium crystals will be destroyed at higher temperature. Also, Silicon has much smaller leakage current than that of germanium.

What is an advantage of a germanium diode over silicon?

However, the germanium diode has one major advantage over Si. Ge has higher electron and hole mobility and because of this Ge devices can function up to a higher frequency than Si devices. The germanium diode is also superior to silicon diode in terms of energy loss, current loss, etc.

Why silicon is preferred over germanium for manufacturing electronic devices?

Summary: At room temperature, Silicon crystal has fewer free electrons than Germanium crystal. This implies that silicon will have much smaller Collector cut off current than Germanium. The variation of Collector cut off current with temperature is less in Silicon compared to Germanium.

What is the difference between germanium and silicon?

Silicon and germanium have four valence electrons but at the given temperature germanium will have more free electrons and higher conductivity than silicon. Silicon is more widely used in the electronic device than germanium since it can be used at a higher temperature.

Why are silicon and germanium useful in the electronics industry?

Explanation: Each has four valence electrons, but germanium will at a given temperature have more free electrons and a higher conductivity. Silicon is by far the more widely used semiconductor for electronics, partly because it can be used at much higher temperatures than germanium.

Why is silicon The most commonly used substrate for fabricating ICS?

Silicon material has been widely used in semiconductor device fabrication because of its low cost and its producibility of high quality silicon dioxide needed for impurity diffusion and surface passivation processes.

Why do we use silicon and germanium in semiconductors?

Silicon and germanium are used here effectively because they have 4 valence electrons in their outermost shell, which gives them the ability to gain or lose electrons equally at the same time.

What is the use of silicon and germanium?

Silicon-germanium is an important material that is used for the fabrication of SiGe heterojunction bipolar transistors and strained Si metal-oxide-semiconductor (MOS) transistors for advanced complementary metal-oxide-semiconductor (CMOS) and BiCMOS (bipolar CMOS) technologies.

What are the advantages of Sillicon over germanium?

What are the advantages of silicon over germanium? Cost-effective: Silicon is relatively easy and inexpensive to procure and process, while germanium is a rare material that is typically found in copper, lead or silver deposits. Due to its rarity, working with germanium is more expensive, making it harder (and sometimes more expensive) to find

What is the difference between silicon and germanium?

The key difference between silicon and germanium is that the Germanium has d electrons, but Silicon does not have any d electrons. Silicon and germanium, are both in the same group (group 14) of the periodic table.

What is bond between silicon and germanium?

Silicon and Germanium are examples of covalent crystals. In these solids the atoms are linked to each other by covalent bonds rather than by electrostatic forces or by delocalized valence electrons that work in metals almost like a “glue”. The most classic example of covalent crystal is the diamond that belongs to the fcc cubic crystal system.

Is germanium a good semiconductor of electricity?

An example of a semiconductor is silicon. A material that is neither a good conductor of electricity nor a good insulator, but has properties of electrical conductivity somewhere between the two. Silicon and germanium are good semiconductor materials .