A lead telluride nanorod with uniform size, preparation method and application thereof

A nanorod and lead telluride technology is applied in the field of nanomaterials to achieve the effects of simple preparation process, uniform size distribution and good solubility
CN107892282BActive Publication Date: 2020-11-17SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU UNIV
Publication Date
2020-11-17

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Abstract

The invention discloses a lead telluride nano rod with a uniform size, and a preparation method and applications thereof. According to the preparation method, a short chain organic acid (trans-2-decenoic acid) and lead oxide are combined to form a lead precursor; tri(diethylamino)phosphine and elemental tellurium are combined to form a tellurium precursor; the lead telluride nano rod with a uniform size is synthesized by regulating the reaction temperature and the ratio of the lead precursor to the tellurium precursor and adopting a heat injection method; the diameter of the nano rod is 2-5 nanometers, the length of the nano rod is 10 to 60 nanometers; the electronic belt of the nano rod is anisotropic, and the nano rod has a strong quantum confinement effect. The provided lead telluride nano rod can be well dissolved in an n-hexane solvent and has the advantages of wider application range and user-friendliness. In an ultraviolet visible-near infrared absorption spectrum, the characteristic absorption peaks of the lead telluride nano rod are in a range of 400-550 nm; and the nano rod has special optical properties and thus can be applied to the fields such as solar battery, photoelectric detector, thermoelectric devices, and the like.
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Description

Technical field

[0001] The invention belongs to the technical field of nanomaterials, and relates to a lead telluride nanorod, a preparation method and application thereof. The provided lead telluride nanorod has uniform size, good solubility, and extremely strong quantum confinement effect. Background technique

[0002] Lead telluride (PbTe) in the narrow band gap lead chalcogenide semiconductor material has a large Bohr radius (46 nm), and the mass of electrons in lead telluride is smaller than that of holes, which makes its size and morphology adjustable The space is larger than that of lead selenide (PbSe), which makes its quantum confinement effect particularly significant. At the same time, it has the properties of high dielectric constant, high thermoelectric figure of merit (ZT), and adjustable energy level. In addition, the unique anisotropic electron band structure of lead telluride promotes its special optoelectronic properties. Therefore, materials such as lead tellu...

Claims

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