there are deifferent types of solar panels some examples are photovoltaic module the photovoltaic module is composed of individual PV cells.This crystalline-silicon module has an aluminium frame and glass on the front.
information gotten from http://en.wikipedia.org/wiki/Photovoltaic_module

the other type of panel is a solar thermal collector it was made especially to collect heat.(which absorbs heat from the sun to provides heat) there are other types of thermal collertors like (solar parabolic, solar trough and solar towers).
information gotten from http://en.wikipedia.org/wiki/Solar_thermal_collector
