Exciton and Electron Traps on Structural Defects in Molecular Crystals with Dipolar Molecules

Abstract

The depths of exciton and electron traps arising due to the presence of structural defects in organic crystals consisting of dipolar molecules are calculated. In the model studied a structural defect appears if a molecule is rotated by 180" around the long axis as compared to the bulk molecules.

Molecular Disorder in Crystalline Thin Films of an Asymmetric BTBT Derivative

“…There exists a variety of structural defects that cause variations from the ideality . Chemical defects arise from substitutional molecules or physical defects because of the distortion of periodic lattices like vacancies, dislocation lines, or stacking faults. , Optical properties as well as charge transport within organic semiconductors are highly affected by defects. − Structural defects at a considerably larger length scales are the crystal size and crystal mosaicity associated with grain boundaries between single-crystalline domains …”

Molecular Disorder in Crystalline Thin Films of an Asymmetric BTBT Derivative

“…There exists a variety of structural defects that cause variations from the ideality . Chemical defects arise from substitutional molecules or physical defects because of the distortion of periodic lattices like vacancies, dislocation lines, or stacking faults. , Optical properties as well as charge transport within organic semiconductors are highly affected by defects. − Structural defects at a considerably larger length scales are the crystal size and crystal mosaicity associated with grain boundaries between single-crystalline domains …”

Molecular Disorder in Crystalline Thin Films of an Asymmetric BTBT Derivative

“…There exists a variety of structural defects that cause variations from the ideality . Chemical defects arise from substitutional molecules or physical defects because of the distortion of periodic lattices like vacancies, dislocation lines, or stacking faults. , Optical properties as well as charge transport within organic semiconductors are highly affected by defects. − Structural defects at a considerably larger length scales are the crystal size and crystal mosaicity associated with grain boundaries between single-crystalline domains …”

Molecular Disorder in Crystalline Thin Films of an Asymmetric BTBT Derivative

“…There exists a variety of structural defects that cause variations from the ideality . Chemical defects arise from substitutional molecules or physical defects because of the distortion of periodic lattices like vacancies, dislocation lines, or stacking faults. , Optical properties as well as charge transport within organic semiconductors are highly affected by defects. − Structural defects at a considerably larger length scales are the crystal size and crystal mosaicity associated with grain boundaries between single-crystalline domains …”