Hall mobility exceeding 100 cm² V^-1 s^-1 observed in strained organic semiconductors.

ABSTRACT: A highly periodic electrostatic potential and coherent band transport can emerge in organic molecular crystals, despite weak van der Waals interactions. Although charge carrier mobility in single-crystalline organic semiconductors (OSCs) reaches 10 square centimeters per volt per second (cm² V^-1 s^-1), it is predominantly limited by molecular vibrations excited at room temperature. The extent to which mobility in single-crystalline OSCs can be increased remains a central question. Here, we demonstrate charge transport in a clean two-dimensional hole gas (2DHG) in uniaxially strained, single-crystalline OSCs at cryogenic temperatures, with minimized lattice vibrations. Hall effect measurements reveal a mobility of 117 cm² V^-1 s^-1

SUBMITTER: Furukawa T 

PROVIDER: S-EPMC12487896 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature