Fan Dehua, Jing Baolong, Han Jin
National Key Laboratory of Woody Oil Resources Utilization, Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, School of Materials and Energy, Central South University of Forestry and Technology, Changsha, 410004, People's Republic of China.
Nanotechnology. 2025 Sep 9;36(37). doi: 10.1088/1361-6528/adfd64.
In recent years, all-inorganic metal halide perovskite nanocrystals (NCs) have emerged as promising optoelectronic materials due to their exceptional optical properties, including high photoluminescence (PL) quantum yields (PLQYs > 90%), extremely narrow full width at half maximum (FWHM < 30 nm), broadly tunable emission spectra, and short decay lifetimes. However, extensive reviews exist on colloidal perovskite NCs synthesized via solution-related methods. Here, this review uniquely focuses on solid-state synthesis of bulk and powder NCs. And a comprehensive overview of the latest advancements in solid-state synthesis techniques is provided, including high-energy ball milling, high-temperature solid-state synthesis (molten salt synthesis and template-confined synthesis), and glass matrix encapsulation. Furthermore, the PL applications of all-inorganic metal halide perovskite NCs in white light-emitting diodes (LEDs), micro LEDs (-LEDs), liquid crystal display (LCD) backlight, anti-counterfeiting, and x-ray are discussed in detail, emphasizing their superior performance in terms of color purity, brightness, and stability. Ultimately, the current challenges, including defect regulation, stability of iodine-based materials, and in-depth understanding of template growth mechanisms are still bottlenecks hindering further research. This review may assist researchers in developing the solid-state synthesis of all-inorganic metal halide perovskite NCs and applying this synthesis method to next-generation optoelectronic devices.
近年来，全无机金属卤化物钙钛矿纳米晶体（NCs）因其优异的光学性能，包括高光致发光（PL）量子产率（PLQYs>90%）、极窄的半高宽（FWHM<30nm）、宽可调发射光谱和短衰减寿命，已成为有前途的光电器件材料。然而，对于通过溶液相关方法合成的胶体钙钛矿NCs已有大量综述。在此，本综述特别关注块状和粉末状NCs的固态合成。并对固态合成技术的最新进展进行了全面概述，包括高能球磨、高温固态合成（熔盐合成和模板受限合成）以及玻璃基质封装。此外，还详细讨论了全无机金属卤化物钙钛矿NCs在白光发光二极管（LED）、微型LED（μ-LED）、液晶显示器（LCD）背光源、防伪和X射线方面的PL应用，强调了它们在色纯度、亮度和稳定性方面的卓越性能。最终，当前的挑战，包括缺陷调控、碘基材料的稳定性以及对模板生长机制的深入理解，仍然是阻碍进一步研究的瓶颈。本综述可能有助于研究人员开展全无机金属卤化物钙钛矿NCs的固态合成，并将这种合成方法应用于下一代光电器件。
