As I understand doping is common for semiconductors and conducting polymers. The p-doping signifies removal/donation of electrons making the polymer positive and hence the name is given p-doping. Similarly, when polymer receives electron via doping it acquires negative character/charge indicating n-doping. In semiconductor also deliberate extra material mixing is done and it may be called p or n doping depending on acquiring charge on the host.

In inorganic semiconductors, dopants that donate an electron to the conduction band are called donors and produce n-type semiconductors. Acceptors, like boron in Si leave a hole in one of the four Si bonds which attract an electron from the valence band leaving a net positive charge or hole. Thus in inorganic semiconductors an acceptor dopant leaves a p-type semiconductor. In organic semiconducting materials this logic can be turned around, like driving on the left side of the road. If the host site, i.e. the Si in this case, donates an electron to boron/Si bond it still produces a p-type for bulk Si but the nomenclature is changed because the bulk donates instead of the dopant impurity. So in this case acceptor/donor refers to minority not majority carriers. That is when excitons are activated by light the p-type donates electrons to the n-type at the D/A junction.