Excitonic states of liquid and solid orientationally disordered solutions

Abstract

Excitonic states in liquid and solid orientationally disordered solutions are considered. It is shown that collective properties of excitations depend essentially on correlation properites of orientational degrees of freedom of the solution. Specifically, this dependence is exponentially stronger in liquid solutions compared with solid solutions. It is also shown that energy level shift caused by exciton interactions linearly with the concentration of molecules.