Abstract
The effect of bonding position on the energy conversion efficiency of porphin graphene nanoribbons coupled thermoelectric devices was studied by the first-principles. The results show that the change of bonding position can greatly adjust the lattice thermal conductivity of the coupled thermoelectric devices; although the change of bonding position has no obvious effect on the transport properties of holes in the coupled structure, it can obviously adjust the transport properties of electrons, resulting in the different Seebeck coefficients and quality merit values of different coupled thermoelectric devices The results illustrate the different thermoelectric energy conversion effects in different porphin graphene nanoribbons coupled thermoelectric devices with different bonding positions, which provides an effective theoretical basis for the design of thermoelectric quantum devices based on graphene nanoribbons.
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