Emergence of Multi‐Modal Perovskite Optoelectronic Devices

ABSTRACT Perovskite optoelectronic devices, including perovskite solar cells (PeSCs), perovskite light‐emitting diodes (PeLEDs), and perovskite photodetectors (PePDs), have attracted widespread attention owing to their tunable bandgap, high charge mobility, and ease of fabrication. With continuous efforts in performance optimization, these single‐function devices have reached a relatively mature stage. In recent years, increasing attention has been paid to multi‐modal perovskite optoelectronic devices that integrate multiple functionalities within a single device, which reduces system complexity and material consumption. In this review, the recent advances in multi‐modal perovskite optoelectronic devices are summarized. First, the fundamental principles and key characteristics of PeSCs, PeLEDs, and PePDs are introduced, and the potential for integrating multiple functionalities within a single perovskite device is analyzed. Subsequently, the optimization strategies are discussed from the perspectives of perovskite layer optimization, charge transport layer modulation, and device structural design. Finally, the current challenges and future perspectives are assessed. This work is expected to provide insights that could inspire new possibilities for multi‐modal perovskite optoelectronic devices.