Electron and band structures of ‘real’ organic solids

Abstract

In this Chapter we shall complete the band scheme for ‘perfect’ organic solids, obtained in Chapter III, by taking into account electronic contributions in ‘real’ organic solid materials, particularly π-conjugated polymers, due to:

• excess charges either introduced on purpose (doping) or not, including electron- lattice coupling (vibrations) yielding quasi-particles such as polarons or bipolarons;

• topological defaults yielding solitons, including linking of chemical groups;

• structural defaults such as dangling groups due to thermal or radiation treatment, using for example UV or ionic implantation; and

• geometric disorder and its effect on local charges.