通过卤化物工程调控无铅钙钛矿衍生物纳米晶体的发射：CsSnX（X = Cl、Br、Br/I、I）体系

Veronese Alessandro, Patrini Maddalena, Bajoni Daniele, Ciarrocchi Carlo, Quadrelli Paolo, Malavasi Lorenzo

Department of Physics and CNISM, University of Pavia, Pavia, Italy.

Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy.

Front Chem. 2020 Jan 31;8:35. doi: 10.3389/fchem.2020.00035. eCollection 2020.

Nanocrystals of CsSnX (X = Cl, Br, BrI, and I) have been prepared by a simple, optimized, hot-injection method, reporting for the first time the synthesis of CsSnCl, CsSnBr, and mixed CsSn(IBr) nanocrystalline samples. They all show a cubic crystal structure with a linear scaling of lattice parameter by changing the halide size. The prepared nanocrystals have spherical shape with average size from 3 to 6 nm depending on the nature of the halide and span an emission range from 444 nm (CsSnCl) to 790 nm (CsSnI) with a further modulation provided by mixed Br/I systems.

通过一种简单、优化的热注入法制备了CsSnX（X = Cl、Br、BrI和I）的纳米晶体，首次报道了CsSnCl、CsSnBr和混合CsSn(IBr)纳米晶体样品的合成。它们均呈现立方晶体结构，通过改变卤化物尺寸，晶格参数呈线性缩放。所制备的纳米晶体呈球形，平均尺寸为3至6纳米，具体取决于卤化物的性质，发射范围从444纳米（CsSnCl）到790纳米（CsSnI），混合Br/I体系还提供了进一步的调制。