Answer each of the following statements by responding “True” ( or “False” (or “F

Question

Answer each of the following statements by responding “True” ( or “False” (or “F”) . and briefly explain why

(a) In solar cells a forward bias potential is used to draw power.

(b) Increasing the temperature of an intrinsic semiconductor, while remaining in the “extrinsic” region, would increase its conductivity.

(c) A built-in electric field is generated by flow of free electrons and holes across a PN junction.

(d) In a MOSFET the resistance of the conduction channel is changed by varying the current into the emitter.

(e) Photoresist is a sensitive material used in several industrial processes, such as photolithography, for doping the semiconductor.

Explanation / Answer

(a) In solar cells a forward bias potential is used to draw power.

FALSE

(b) Increasing the temperature of an intrinsic semiconductor, while remaining in the “extrinsic” region, would increase its conductivity.

TRUE

(c) A built-in electric field is generated by flow of free electrons and holes across a PN junction.

TRUE

(d) In a MOSFET the resistance of the conduction channel is changed by varying the current into the emitter.

FALSE

(e) Photoresist is a sensitive material used in several industrial processes, such as photolithography, for doping the semiconductor.

TRUE

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