Thermoelectric (TE) materials transform thermal energy
into electricity,
which can play an important role for global sustainability. Conducting
polymers are suitable for the preparation of flexible TE materials
because of their low-cost, lightweight, flexible, and easily synthesized
properties. Here, we fabricate organic–inorganic hybrids by
combining vanadium oxynitride nanoparticles coated with nitrogen-doped
carbon (NC@VNO) and poly(3,4-ethylenedioxy thiophene):poly(styrene
sulfonate) (PEDOT:PSS). We find that the electrical conductivity,
Seebeck coefficient, and power factor of the NC@VNO/PEDOT:PSS film
can be enhanced up to 4158 S/cm, 45.8 μV/K, and 873 μW/mK2 at 380 K, respectively. The large enhancement of the power
factor may be due to the facilitation of the interfacial charge transport
tunnel between the NC@VNO nanoparticles and PEDOT:PSS. The improvement
of the Seebeck coefficient may be due to the energy filter effect
as induced by interfacial contact and internal electric field between
the NC@VNO nanoparticles and PEDOT:PSS. Our measurement suggests that
the high binding energy of pyrrolic-N enhances the Seebeck coefficient,
and the high binding energy of oxide-N increases electrical conductivity.
The discovery of two-dimensional (2D) magnetic materials makes it possible to realize in-plane magnetic tunnel junctions. In this work, an in-plane double barrier magnetic tunnel junction (IDB-MTJ) based on Cr2C...
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