We synthesized cesium lead-halide perovskite colloidal nanocrystals using the hot injection method for wide-color-gamut low-cost displays. An efficient surface defect passivation technique was applied to further improve the optical performance of the green and red perovskite nanocrystals. The prepared perovskite nanocrystal solutions were formulated into inkjet printable homogeneous inks and uniformly printed on the substrate with appropriate surface control. They formed the wide-color-gamut color conversion layers of quantum dot organic light-emitting diode displays. We confirmed the excellent photophysical properties of the synthesized green/red perovskite nanocrystals and the inkjet printed color conversion layers with a photoluminescence quantum yield of 99.7%/96.2% and a wide color reproduction range of 117%.

中文翻译：

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用于具有优异色纯度的喷墨印刷颜色转换层的高性能钙钛矿纳米晶体的研究

我们使用热注入法合成了铯铅卤化钙钛矿胶体纳米晶体，用于广色域低成本显示器。应用有效的表面缺陷钝化技术来进一步提高绿色和红色钙钛矿纳米晶体的光学性能。将制备的钙钛矿纳米晶体溶液配制成可喷墨印刷的均质油墨，并通过适当的表面控制均匀印刷在基材上。他们形成了量子点有机发光二极管显示器的宽色域颜色转换层。我们证实了合成的绿色/红色钙钛矿纳米晶体和喷墨印刷颜色转换层的优异光物理性能，其光致发光量子产率为 99.7%/96.2%，色彩再现范围广，为 117%。