HORTICULTURE

Detailed explanation-1: -Doping allows researchers to manipulate the conductance of a semiconductor by utilizing the characteristics of a group of elements known as dopants. By incorporating a limited number of appropriate alternative particles, semiconductor conductance may be considerably increased.

Detailed explanation-2: -Thus, the impurity atom donates a free electron for conduction in the structure and is referred to as the ‘donor’. Since, the number of free electrons increases by the addition of an impurity, it will further help in conduction. By such process, doping increases the conductivity of the semiconductors.

Detailed explanation-3: -An extrinsic semiconductor is a semiconductor doped by a specific impurity which is able to deeply modify its electrical properties, making it suitable for electronic applications (diodes, transistors, etc.) or optoelectronic applications (light emitters and detectors).

Detailed explanation-4: -By doping impurities into semiconductors, depending on the valence e− of impurities, either holes or free electrons are formed. These electrons and holes act as carriers for electricity. So conductivity of semiconductor increases.