Thibaut Leroy

You've to run SimpleSolarCellAndPanelModel.m, does it solve your problem?
solar.m is just the external calculation function, but you can use it in your own scripts.

Good job!

I would create only one function, but it's another approach. To add uitable's data, you can add this as default properties:
def.uitable = {'Data'};
(it should work)

And instead of having uiremember and uirestore at each uicontrol CreateFcn or DeleteFcn function, I prefer to pass all the objects at one time (all the children of the Graphic Current Figure here):
uiremember(findobj(gcf,'-depth',inf))

sir,
i am unable to run solar.m file. please help

and also how to formulate the excel sheet for other solar cells. what technique have u used..

please help.

thanks.

@Hossein: It's a reproduction of the Current/Voltage nominal curve from Datasheet.
The 1.665V value is Open Voltage (0.665) + 1V to have a large range because of low temperature effect. It can be less, but 0.665V is not enough.