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Silicon and Germanium are not used to make LEDs.
- They are opaque to visible light
- They have the wrong type of band gap (direct instead of indirect).
LEDs are made with binary semiconductors, like:
- Indium Gallium Nitride
- Silicon Carbide
- Indium Phosphide
- Gallium Indium Arsenide Nitride
- Indium Gallium Aluminum Phosphide
- etc.
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∙ 11y ago
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Why germanium is not used as LED material?
LEDs are made from binary semiconductors (e.g. gallium aluminum indium phosphide) not unary semiconductors (e.g. silicon, germanium) because they can be made transparent to light. Silicon & germanium are opaque.
Why germanium is better than silicon?
products made by silicon are more stable than those made by germanium
What is a transister make of?
it is made of silicon or germanium.
What type of material is a transitor made from?
germanium or silicon crystal
Diodes and transistors are made of semiconductor material such as germanium and what?
Silicon
Where is germanium and silicon located in computer chips?
Germanium is not used in integrated circuits. Silicon is.
Can you give examples of elements that are metalloids?
The metalloids are Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, and Polonium.
Why don't use germanium in silicon controlled rectifier?
the leakage current of silicon is less when compared with the leakage current of germanium.. hence scr's are made up of silicon than germanium.. hope tis one is useful to u all!- Vignesh.L(engineer, 1st year)
What element is used in making transistors and chips?
Silicon and Germanium are the elements used in transistors
What has more shells or rings germanium or silicon?
germanium
Is silicon a semiconductor?
Yes,silicon and germanium are semiconductors.
Was Germanium used in transistors?
Yes, germanium was the only material used in transistors from when they were invented in 1947 until 1954 when the first successful silicon transistor was made. However the use of germanium still dominated transistors until the silicon mesa transistor was made commercially available by Fairchild Semiconductor in 1958. Development of the silicon planar transistor by Fairchild Semiconductor the next year ultimately made the integrated circuit possible. While almost all transistors today are silicon, there are still uses for germanium transistors so a few types are still made.
