N-type organic thermoelectrics: demonstration of ZT > 0.3.

ABSTRACT: The 'phonon-glass electron-crystal' concept has triggered most of the progress that has been achieved in inorganic thermoelectrics in the past two decades. Organic thermoelectric materials, unlike their inorganic counterparts, exhibit molecular diversity, flexible mechanical properties and easy fabrication, and are mostly 'phonon glasses'. However, the thermoelectric performances of these organic materials are largely limited by low molecular order and they are therefore far from being 'electron crystals'. Here, we report a molecularly n-doped fullerene derivative with meticulous design of the side chain that approaches an organic 'PGEC' thermoelectric material. This thermoelectric material exhibits an excellent electrical conductivity of >10 S cm^-1 and an ultralow thermal condu

SUBMITTER: Liu J 

PROVIDER: S-EPMC7655812 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature