A solar cell 09 cm2 receives solar radiation with photons of...

A solar cell (0.9 cm^2) receives solar radiation with photons of 1.8 eV energy, having an intensity of 0.9 mW/cm^2. Measurements show an open-circuit voltage of 0.6 V/cm^2, a short-circuit current of 10 mA/cm^2, and the maximum current is 50% of the short-circuit current. The efficiency of the cell is 25%. Calculate the maximum voltage that the cell can give and find the "fill factor".

Transcript

00:01 The task is to calculate the maximum voltage and fill factor of a solar cell using given parameters, and we can mention the incident in density, and it will be here p, now we are having i -n.

00:14 So this value is equal to 0 .9, and it is millivot, and then it will be per centimeter square.

00:23 So this is here equals to 0 .9, multiplied with 10 raised to the power, negative 3 and here it will be what now it is per centimeter square so open circuit voltage can be denoted as voc so this value is 0 .6 now it is volt and then it will be per centimeter square then we can mention the short circuit current and it is denoted by i and it will be sc so this is equals to 10 then it is millie ampere and here we will be having per centimeter square so this value can also be written as 10 times 10 raised to the power negative 3 now it will be ampere per centimeter square so let us mention the i max value and here it will be i max and this is equals to 50 percentage of the short circuit current that is i s and if we substitute the value then it will be here 5 times 10 raised to the power negative 3 now it is ampere per centimeter square then the value of efficiency can be mentioned as 25 percentage which is also equals to 0 .25 so next step is to calculate the voltage so here the value of efficiency can be written as v max now it is multiplied with i max then in the denominator we will be having the value of p i n which is the incident intensity so if we rearrange this expression in order to find the value of v max then it will be here equals to 0 .9 and then it is multiplied with 10 raised to the power negative 3 now it is multiplied with 0 .25 and now we are going to have the value of i max which is 5 times 10 raised to the power negative 3 and if we simplify it again then here the value of v max then it is equals to 0 .0 .45 and here it will be volt per centimeter square so we have obtained the answer and we can put the answer inside the box and it will look like this.

02:53 Now we will try to find the value of fill factor.

02:57 So here this is the second part of this very problem and we can mention the formula for fill factor which is equals to v max and it is multiplied with i...

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