摘要：【中文】本发明提供了一种改性铯铅碘钙钛矿量子点及其制备方法和一种LED器件，属于无机钙钛矿纳米材料技术领域。本发明提供的改性铯铅碘钙钛矿量子点，包括包覆层和核芯，所述核芯为铯铅碘钙钛矿纳米粒子，所述包覆层的组分包括油酸阴离子、油胺阳离子和并四苯；所述改性铯铅碘钙钛矿量子点中的铯铅碘钙钛矿纳米粒子为立方相。本发明在包覆层中加入具有较强导电性的并四苯，并四苯和油酸阴离子、油胺阳离子共同作为配体，形成包覆层，将铯铅碘钙钛矿纳米粒子包裹在内部，增加了量子点个体之间的电荷传输能力。 【EN】The invention provides a modified cesium-lead-iodine perovskite quantum dot, a preparation method thereof and an LED device, and belongs to the technical field of inorganic perovskite nano materials. The modified cesium lead iodoperovskite quantum dot provided by the invention comprises a coating layer and a core, wherein the core is cesium lead iodoperovskite nano particles, and the coating layer comprises oleic acid anions, oleylamine cations and tetracene; the cesium lead iodoperovskite nano particles in the modified cesium lead iodoperovskite quantum dots are cubic phases. According to the invention, tetracene with high conductivity, an oleic acid anion and an oleylamine cation are added into the coating layer to be used as ligands together to form the coating layer, and cesium lead iodoperovskite nanoparticles are coated inside the coating layer, so that the charge transmission capability among quantum dot individuals is increased.

摘要：【中文】本发明涉及全无机钙钛矿太阳电池技术领域，尤其涉及功能性聚合物在全无机钙钛矿太阳电池中的应用及制备方法和全无机钙钛矿太阳电池。所述功能性聚合物能够抑制钙钛矿晶体缺陷并增加薄膜的疏水性，起到提高电池效率与湿度稳定性的作用。根据实施例的记载，将功能性聚合物应用到全无机钙钛矿电池后得到的电池光电转换效率≥14.01％，所述含功能性聚合物的全无机钙钛矿光吸收层与水产生的接触角均大于未应用功能性聚合物的全无机钙钛矿光吸收层与水产生的接触角，提高了含功能性聚合物的全无机钙钛矿光吸收层的疏水性，进而改善全无机钙钛矿电池的稳定性。 【EN】The invention relates to the technical field of all-inorganic perovskite solar cells, in particular to an application and a preparation method of a functional polymer in an all-inorganic perovskite solar cell and an all-inorganic perovskite solar cell. The functional polymer can inhibit perovskite crystal defects and increase the hydrophobicity of the film, and plays a role in improving the efficiency and humidity stability of the battery. According to the description of the embodiment, the photoelectric conversion efficiency of the cell obtained after the functional polymer is applied to the all-inorganic perovskite cell is not less than 14.01%, the contact angle between the all-inorganic perovskite light absorption layer containing the functional polymer and water is larger than the contact angle between the all-inorganic perovskite light absorption layer without the functional polymer and water, the hydrophobicity of the all-inorganic perovskite light absorption layer containing the functional polymer is improved, and the stability of the all-inorganic perovskite cell is further improved.