Assertion: semiconductor's impurity | /r/HasProperty | added
Facets:
value: in order to remove free electrons
type: PURPOSE
Source sentences:
text: Other impurities such as Aluminium and Boron can be added in order to remove free electrons, so that the resulting material has fewer free electrons than before.
text: Semiconductor crystal used for IC etc. is high purity single crystal silicon of 99.999999999%, but when actually making a circuit, impurities are added to control the electrical properties.
text: Semiconductor crystal used for IC etc. is high purity single crystal silicon of 99.999999999%, but when actually making a circuit, impurities are added to control the electrical properties.
text: in which intentionally impurities is added for making it conductive is known as the extrinsic semiconductor.
text: Semiconductors are crystals that, in their pure state, are resistive (that is, their electrical properties lie between those of conductors and insulators) -- but when the proper impurities are added (this process is called doping) in trace amounts (often measured in parts per billion), display interesting and useful properties.