Different semiconductor materials: germanium, Physics

 

(1)         Melting point : 9360C

(2)         Atomic number : 32

(3)         Energy gap : 0.6ev

(4)         It is a gray metallic looking material.

(5)         It is brittle and glass like in its mechanical properties.

(6)         It crystallizes in the diamond cubic lattice.

(7)         It has an intrinsic resistivity of 47 O-cm but may be doped with antimony or arsenic to give N-type resistivity of 0.01O-m or less and with boron, Gallium or Aluminium to give P-type resistivity of 0.001 O-m or less. It is usually prepared in high purity crystals from for electronics used by pulling from the melt either vertically or horizontally. To obtain intrinsic material, impurities of active elements must be in the range of 1part/billion or less. The active impurity such as Gallium, indium, arsenic, and antimony tend to diffuse rather slowly in germanium. The donors diffuse faster than the acceptors. It discovers use in close infrared detection and in X-ray detectors.

 

Posted Date: 7/7/2012 9:22:50 AM | Location : United States







Related Discussions:- Different semiconductor materials: germanium, Assignment Help, Ask Question on Different semiconductor materials: germanium, Get Answer, Expert's Help, Different semiconductor materials: germanium Discussions

Write discussion on Different semiconductor materials: germanium
Your posts are moderated
Related Questions
The airplane shown in the figure is to achieve "weightlessness" for a short period of time by flying along a curved path such that it's acceleration components in x direction a x


an object has moved through a distance.can it have zero displacement?if yes support your answer with an example

Each plate of a parallel plat capacitor has area 15 cm 2 and is being charged. The time rate of variation of electric field between the two plates of the capacitor is 12.6 x 10 9

And then did he sit up.IS THIS A SENTENCE OR A QUESTION


what are isotopes?

Inductors can be classified on the basis of nature of value and type of core used. Different type of inductors based on the type of core is: AIR CORE INDUCTORS: Air core coils

A figure separated into squares, each of size 1 mm 2 is being viewed at a distance of 9cm by a magnifying lens of local length 10cm, held close to the eye. (i) Illustrate a ray

It is based on the principle that conductivity of a semiconductor enhances with increase in the intensity of incident light. In this, a thin layer of some semiconductor (as