Halide perovskites have emerged as a new class of inorganic-based soft semiconductors that are revolutionizing the field of (opto)electronics. However, the fundamental structures and properties or functions of halide perovskites are still far from being fully understood, calling for the need of precise, quantitative, and high-spatiotemporal-resolution characterizations. As one of the most powerful multimodal characterization techniques, synchrotron radiation offers high-brilliance X-ray beams for high-resolution observations across multiple length scales obtained within extremely short time spans. Performing a brief review of synchrotron-based perovskite studies in the literature, here we provide perspectives on the use of synchrotron characterizations not only for studying multiple-length-scale structures and dynamic variations of perovskite materials, but also for in situ monitoring of device functions and dynamics. The goal of this perspective is to present many capabilities and evoke emerging opportunities of synchrotron characterizations for providing decisive answers to the outstanding science problems in the perovskite field, pushing forward the technological development.

卤化物钙钛矿已经成为一类新型的基于无机的软半导体，正在彻底改变（光电）电子领域。但是，卤化物钙钛矿的基本结构和性质或功能仍未得到充分理解，需要精确，定量和高时空分辨率的表征。作为最强大的多峰表征技术之一，同步加速器辐射可提供高亮度X射线束，用于在极短的时间跨度内跨多个长度尺度进行高分辨率观察。对文献中基于同步加速器的钙钛矿的研究进行简要回顾，现场监视设备功能和动态。该观点的目的是提供许多功能并唤起同步加速器表征的新兴机会，以便为钙钛矿领域的突出科学问题提供决定性的答案，从而推动技术发展。