Coefficients for Isc and Voc

1. Apr 3, 2016

says

1. The problem statement, all variables and given/known data
I need to calculate the coefficients for open circuit voltage (Voc) and short circuit current (Isc). I know that the higher temperature = lower Voc, higher Isc. I've done a bit of searching but I can't seem to find an equation or any theory about the coefficients though.

2. Relevant equations
I have one equation that was given:
y(T) = y(25C) + (α/100)*(T-25C)

3. The attempt at a solution
I have an open circuit voltage of .51, .42,.46 and .3 at 26C,60C,90C and 120C, respectively.

I also have short circuit current of .62, .66, .63 and .61 at the same temperatures.

I was thinking of putting the data into a xy-scatterplot, then getting a trendline and finding the gradient. I'm not sure if the gradient would be what i'm looking for though...

2. Apr 3, 2016

Staff: Mentor

Is this in relation to a specific circuit or device?

3. Apr 3, 2016

solar cell

4. Apr 3, 2016

Staff: Mentor

You are not going to fit a straight line to those figures. Are you able to remeasure?

5. Apr 3, 2016

says

Do you know where I could find some literature on the coefficents? I can't seem to find anything...

6. Apr 3, 2016

Staff: Mentor

Have you tried a google search? e.g., temperature effect on photovoltaic cells

7. Apr 3, 2016

says

Yes of course, but I can't find anything about the coefficients or calculating them.

8. Apr 3, 2016

Staff: Mentor

I would first plot the data to see whether it is going to be a good fit to a straight line.

9. Apr 4, 2016