Question

Photoconductors are made of _______

(a) thick layer of semiconductor

(b) thin layer of semiconductor

(c) capacitive substrate

(d) inductive substrate

This question was posed to me during an interview.

Question is taken from Photoelectric Transducers topic in division Transducers of Electrical Measurements

Answer 1

The correct answer is (b) thin layer of semiconductor

For explanation I would say: Photoconductors comprise of a thin layer of semiconductor. Photoconductors not consisting of a junction are known as junction less detectors.