Abstract

Heterostructures consisting of crystalline organic semiconductors can be layered in nearly defect-free structures due to the weak van der Waals bonding between molecules.^[1] As a result of their crystalline order, these films have exhibited enormous anisotropies in both their conductive and dielectric properties.^[2,3] Moreover, the relatively large exciton binding energy results in an exciton absorption peak deep in the band gap, which leads to large Stark shifts useful for optical modulation. Due to the unique electrical and optical properties of this class of materials, it is useful to understand how crystalline organic multiple quantum wells (MQWs) behave in an electric field.

© 1993 Optical Society of America