Optimization of the thermoelectric performance of layer-by-layer structured copper-phthalocyanine (CuPc) thin films doped with hexacyano-trimethylene-cyclopropane (CN6-CP).

ABSTRACT: Copper-phthalocyanine (CuPc), as a classical small molecular organic semiconductor, has been applied in many fields. However, the low intrinsic conductivity limits its application in thermoelectricity. Here, hexacyano-trimethylene-cyclopropane (CN6-CP), a strong electron acceptor, is synthesized as dopant for CuPc thin films to improve their conductivities. Multilayer thin films constructed from alternate thermally evaporated CuPc and CN6-CP thin layers are investigated. Under the optimized condition, the doped CuPc film with a conductivity of 0.76 S cm^-1 and a Seebeck coefficient of 130 μV K^-1, shows a high power factor of 1.3 μW m^-1 K^-2 and the carrier concentration is estimated to be 2.8 × 10²⁰ cm^-3. Considering the relat

SUBMITTER: Xing W 

PROVIDER: S-EPMC9072697 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature