Electrostatic phenomena in organic semiconductors: fundamentals and implications for photovoltaics
Résumé
This review summarizes the current understanding of electrostatic phenomena in ordered and disordered organic semiconductors, outlines numerical schemes developed for quantitative evaluation of electrostatic and induction contributions to ionization potentials and electron affinities of organic molecules in a solid state, and illustrates two applications of these techniques: interpretation of photoelectron spectroscopy of thin films and energetics of heterointerfaces in organic solar cells.
Mots clés
organic semiconductors
organic photovoltaics
molecular thin films
electrostatic phenomena
DENSITY-FUNCTIONAL THEORY
HOT EXCITON DISSOCIATION
CHARGE-TRANSFER STATES
ELECTRONIC POLARIZATION
MOLECULAR-CRYSTALS
LOCALIZED CHARGE
SOLAR-CELLS
SUBSTITUTED OLIGOTHIOPHENES
INVERSE-PHOTOEMISSION
CONJUGATED POLYMERS