What is piezoelectric effect PZT is a commonly used piezoele

What is piezoelectric effect? PZT is a commonly used piezoelectric material? What does it stand for? What is the structure of PZT? Name another piezoelectric material? 11 If you were to create a three junction solar cell, name three materials for each junction and the frequency or wavelength associated with that material? 12 What is FIll factor? What is a Ragone Plot? Name one primary and one secondary battery 13. Apart from piezoelectric name one other mechanical energy harvesting methology. Define it.

Solution

11. Piezo electric effect or piezoelectricity would just simply be an electric charge accumulating in response to another pressure exerted on it. Or you can just say that pushing something would cause an electric charge to form. For example, there are floors which can light up when people step on them. The light energy is obtained from the energy generated by people which exert pressure on it.

PZT= Lead Zirconate Titanate

12.The fill factor is defined as the ratio of the actual maximum obtainable power, to the product of the open circuit voltage and short circuit current.\" The importance is that it is one of the parameters that determine the total efficiency of the solar cell.