ns a struct which contains
% the 5 points on the I-V curve specified in SAND2004-3535 [3], and can
% optionally provide a full IV curve with a user-defined number of
% points. If all IL, I0, Rs, Rsh, and nNsVth are scalar, a single curve
% will be returned, if any are vectors (of the same length), multiple IV
% curves will be calculated.
%
%% Inputs:
%%
% * *|IL|* - Light-generated current (photocurrent) in amperes under desired IV
%      curve conditions. May be a scalar or vector, but vectors mu