Defect-tolerant electron and defect-sensitive phonon transport in quasi-2D conjugated coordination polymers.

ABSTRACT: Thermoelectric materials, enabling direct waste-heat to electricity conversion, need to be highly electrically conducting while simultaneously thermally insulating. This is fundamentally challenging since electrical and thermal conduction usually change in tandem. In quasi-two-dimensional conjugated coordination polymer films we discover an advantageous thermoelectric transport regime, in which charge transport is defect-tolerant but heat propagation is defect-sensitive; it imparts the ideal mix of antithetical properties-temperature-activated, exceptionally low lattice thermal conductivities of 0.2 W m^-1 K^-1 below Kittel's limit originating from small-amplitude, quasi-harmonic lattice dynamics with disorder-limited lifetimes and vibrational scattering length on the o

SUBMITTER: Un HI 

PROVIDER: S-EPMC12274412 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature