Electrical Properties

Question 1

Doping Silicon with Phosphorus will create which type of semiconductor?

Answer 1

n-type

Question 2

A p-type semiconductor…

Answer 2

has electron holes created in the valance band

Question 3

Which of the following materials do you anticipate to be transparent to optical light?

Answer 3

Optical transpacrency = Bandgap > 3.1

Question 4

Rank the following compounds by their expected index of refraction with 1 having the highest value of n.

PbS, ZnS, ZnO, PbO, MgO, BeO

Answer 4

PbS, PbO, ZnS, ZnO, MgO, BeO

Question 5

Visible light having a wavelength of 0.6 µm appears orange. Compute the energy of a photon of this light, in units of eV. Report your answer with 3 digits after the decimal point.

Answer 5

2.066102

Question 6

The fraction of nonreflected radiation that is transmitted through a 5 mm thick transparent material is 0.65. If the thickness is increased to 24 mm, what fraction of light will be transmitted?

Answer 6

0.126 ± 3%