The Seebeck effect measures the electric potential built up in materials under a temperature gradient.For organic thermoelectric materials,the Seebeck coefficient shows more complicated temperature dependence than con...The Seebeck effect measures the electric potential built up in materials under a temperature gradient.For organic thermoelectric materials,the Seebeck coefficient shows more complicated temperature dependence than conventional systems,with both monotonic increases and nonmonotonic behavior,that is,first increasing and then decreasing.The mechanism behind the phenomenon is intriguing.Through first-principles calculations coupled with the Boltzmann transport equation,we demonstrate typical trends of the Seebeck coefficient with respect to temperature through band structure analysis.展开更多
基金supported by the National Natural Science Foundation of China through the project“Science Center for Luminescence from Molecular Aggregates”(SCELMAgrant no.201788102)the Ministry of Science and Technology of China through the National Key R&D Plan(grant no.2017YFA0204501).
文摘The Seebeck effect measures the electric potential built up in materials under a temperature gradient.For organic thermoelectric materials,the Seebeck coefficient shows more complicated temperature dependence than conventional systems,with both monotonic increases and nonmonotonic behavior,that is,first increasing and then decreasing.The mechanism behind the phenomenon is intriguing.Through first-principles calculations coupled with the Boltzmann transport equation,we demonstrate typical trends of the Seebeck coefficient with respect to temperature through band structure analysis.
