The invention discloses a narrow-
band gap conjugated
polymer based on benzobithiophene
diazole and tellurophene and application of the narrow-
band gap conjugated
polymer in a self-driven short-wave
infrared response organic photoelectric
synapse flexible device. The narrow-band-gap
polymer is good in
solubility, the
spectral absorption range covers a visible light area, a near-
infrared band and a part of short-wave
infrared bands, close packing of molecules is promoted through
tellurium-
tellurium interaction between polymer chains, and therefore the narrow-band-gap polymer has a high
dielectric constant and is beneficial to photogenerated
exciton dissociation. And meanwhile, due to the extremely unbalanced hole and
electron transmission capability of the polymer, electrons which are relatively slowly transmitted become trap centers, so that holes of an
external circuit continuously tunnel and are injected into a device, and a photoconductive effect is generated. The short-wave infrared response organic photoelectric
synapse two-end flexible device prepared on the basis of the mechanism can work without
external bias voltage, simulates multiple nerve
synapse behaviors, and achieves a good effect.