Colloidal all-inorganic perovskite nanocrystals (PNCs), possessing unique optical properties, have attracted considerable attention in the field of semiconductor nanocrystals (NCs), but their application is hindered by the stability issue resulting partly from dynamic capping ligand binding. Herein, we report a simple method for the synthesis of all-inorganic cesium lead-based (CsPbX3) NCs with enhanced structural stability and photoluminescence quantum yield. Aluminum distearate (AlDS) was introduced into the preparation of CsPbX3 NCs, on the basis that the surface defects of CsPbX3 NCs are passivated to form a protective layer on the CsPbX3 NC surface simultaneously. Benefiting from surface modification, the resistance of the CsPbX3 NC dispersion against ethanol, ultraviolet irradiation, and heat treatment was enhanced effectively. Moreover, the photoluminescence intensity and stability of the AlDS–modified NC-based films displayed functional superiority to those of pristine NC-based films.

中文翻译：

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硬脂酸铝改性的CsPbX3（X？=？I，Br或Cl / Br）纳米晶体，具有增强的光学和结构稳定性

具有独特光学性质的胶态全无机钙钛矿纳米晶体（PNC）在半导体纳米晶体（NCs）领域引起了相当大的关注，但其应用受到了部分由于动态封端配体结合而引起的稳定性问题的阻碍。在这里，我们报告了一种简单的方法，用于合成具有增强的结构稳定性和光致发光量子产率的全无机铯铅基（CsPbX3）NC。在钝化CsPbX3 NC的表面缺陷的同时，将硬脂酸铝（AlDS）引入到CsPbX3 NC的制备中。得益于表面改性，CsPbX3 NC分散体对乙醇，紫外线辐射和热处理的抵抗力得到了有效提高。此外，