Modulation of charge transfer exciton dynamics in organic semiconductors using different structural arrangements

Abstract

In devices based on organic semiconductors, aggregation and inter-molecular interactions play a key role in affecting the photo-physical and dynamical carrier properties of the material, potentially becoming a limiting factor...

Intermixing of Unoccupied States of Metal Phthalocyanine Chains Assembled on Au(110)

“…Concerning CoPc (3d 7 ) thin-film IPES assignments, depending on the theoretical functional used, the frontier empty orbital is found either as the a 1g SUMO (purely Co 3d z 2 ) or LUMO eg character. Recently combined PES-IPES measurements of CoPc/Au(111) thick films (25 nm) assigned the first empty state to the a1g unoccupied d z2 orbital [ 28 ]. The e g symmetry state LUMOs are located at about 1.7 eV above E F .…”

“…IPES data have been published for tetrapyrrole thin films [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ], and the unoccupied density of states of the CuPc adlayer on metal and semiconductor surfaces [ 18 , 19 , 20 , 21 , 22 , 23 , 24 ] or nanoparticles [ 25 ] is the most studied MPc and well characterized in the literature. The CoPc IPES literature is not as rich (see [ 20 , 21 , 28 ] and references therein).…”