Vibrational Neutron Spectroscopy Data for Small Molecule Organic Semiconductors

Organic semiconductors are a class of molecules that self-assemble into materials that have semiconducting properties. Recently, they have generated a large amount of research interest due to their solution processability, mechanical flexibility, and conducting properties. Small molecule organic semiconductors are highly crystalline, which means molecular vibrations/phonons are the dominant factors affecting charge transport properties. A key to improving small-molecule semiconductors involves designing materials that minimize the effects of vibrations/phonons on charge transport. Vibrational neutron spectroscopy is a method for characterizing molecular vibrations and phonon modes over a wide energy range (1 meV - 1 eV). Each of the peaks represent the frequency of the motion of hydrogens present in the material. The data was collected at 5 K. Here we present vibrational neutron spectroscopy data for the small molecule organic semiconductors: BTBT, c8-BTBT, m8-BTBT, TIPS-pentacene, TIPS...