Magnetic field-modulated exciton generation in organic semiconductors: an intermolecular quantum correlation effect

Abstract

Magnetoelectroluminescence (MEL) of organic semiconductor has been experimentally tuned by adopting blended emitting layer consisting of both hole and electron transporting materials. A theoretical model considering intermolecular quantum correlation is proposed to demonstrate two fundamental issues: (1) two mechanisms, spin scattering and spin mixing, dominate the two different steps respectively in the process of the magnetic field modulated generation of exciton; (2) the hopping rate of carriers determines the intensity of MEL. Calculation successfully predicts the increase of singlet excitons in low field with little change of triplet exciton population.

arXiv comment16 pages, 4 figures

References in corpus (2)

• Hyperfine interaction and magnetoresistance in organic semiconductors
• Field-induced spin mixing in ultrathin superconducting Al and Be films in high parallel magnetic fields

Cited by in corpus (3)

• Structural study of monolayer cobalt phthalocyanine adsorbed on graphite
• Investigation of the magnetic field effects on the electron mobility in tri-(8-hydroxyquinoline)-aluminum based light-emitting devices
• Magnetoresistance from quenching of spin quantum correlation in organic semiconductors