All Irradiance‐Applicable, Perovskite Solar Cells‐Powered Flexible Self‐Sustaining Sensor Nodes for Wireless Internet‐of‐Things

Abstract Currently, there are 17 billion IoT nodes, mostly powered by cables or batteries, leading to high maintenance costs and increased risk of data loss during power outages. Although a self‐sustaining IoT node holds potential to tackle this issue, it faces the challenges of obtaining stable, uninterrupted energy sources and maintaining adequate power efficiency. This study introduces a fully irradiated, 24‐h self‐sustaining flexible node (SSN) that is highly integrated with sensors, energy storage, wireless data transmission, and power supply units, specifically a flexible perovskite solar cell module (FPSM). The FPSM enables stable energy supply across diverse indoor and outdoor irradiance conditions, while the SSN employs a smart energy management system to optimize power utilization and distribution. Additionally, wireless data transmission is achieved by a low‐power consumption Zigbee module, enabling dependable 24‐h indoor environmental monitoring and extensive 3D data collection across “indoor‐outdoor‐aerial” environments. Finally, the integration of feedback and control systems allows the FPSM‐SSN to serve as a smart home hub, seamlessly combining sensing and actuation functionalities to enhance system efficiency and functionality.