High‐Performance and Ecofriendly Organic Thermoelectrics Enabled by N‐Type Polythiophene Derivatives with Doping‐Induced Molecular Order

The ability of n-type polymer thermoelectric materials to tolerate high doping loading limits further development of n-type polymer conductivity. Herein, two alcohol-soluble n-type polythiophene derivatives that are n-PT3 and n-PT4 are reported. Due to the ability of two polymers to tolerate doping loading more significantly than 100 mol%, both achieve electrical conductivity >100 S cm