Semiconductor or not, AFAIK photovoltaic panels are designed to react to PHOTONS and nothing else. So while there may be some incidental interaction with radio energy, you'd notice that the same way that you notice the gravitational pull of Saturn.
When you hear hoofbeats, think horses, not unicorns. All that stray WIRING up on the roof is going to act like an antenna. All the "at the lowest price" electronics in the switching converters, that build panel voltage up to higher levels, is going to generate noise. All conventional RFI/EMI problems.
QST covered this in some detail last year. How the installation is done and what equipment is used make all the difference.
The panels? They're just lounging in the sun. Quietly.