Metal halide perovskites (MHPs) possess advantageous optoelectronic properties, so perovskite emitters and perovskite light-emitting diodes (PeLEDs) are promising candidates for next-generation high-colour-purity displays and lighting applications. Within the past 5 years, the luminescence efficiency of MHP emitters and PeLEDs has increased rapidly. However, the industrial applications of perovskites are impeded by several technical bottlenecks, such as insufficient colour reproducibility, low operational stability, toxicity and limited large-scale production. In this Review, we survey the current status of MHP emitters and PeLEDs and provide a technical roadmap to highlight the goals and requirements for them to successfully enter the markets for vivid displays with high colour purity, augmented and virtual reality displays and general and special lighting. We also set out steps for future research in MHPs and their device applications.

金属卤化物钙钛矿 (MHPs) 具有优越的光电特性，因此钙钛矿发射器和钙钛矿发光二极管 (PeLED) 是下一代高色纯度显示器和照明应用的有希望的候选者。在过去的 5 年中，MHP 发射器和 PeLED 的发光效率迅速提高。然而，钙钛矿的工业应用受到一些技术瓶颈的阻碍，例如颜色再现性不足、操作稳定性低、毒性和规模化生产受限。在这篇评论中，我们调查了 MHP 发射器和 PeLED 的现状，并提供了一份技术路线图，以突出它们成功进入高色纯度生动显示器市场的目标和要求，增强和虚拟现实显示以及一般和特殊照明。我们还为 MHP 及其设备应用的未来研究制定了步骤。