Wearable Power Source: A Newfangled Feasibility for Perovskite Photovoltaics

With the booming advances in wearable electronics and perovskite photovoltaics, flexible perovskite solar cells (PSCs) have emerged as promising candidates for self-power sources to sustainably drive next-generation electronics. Wearable PSCs must simultaneously exhibit high power efficiency, low weight, environmental stability, flexibility, stretchability, and twistability, which are essential for practical applications. In this Perspective, we lay out the key points for advancing the development of wearable perovskite power sources. We sequentially analyze the design, quality, printing methods, and standardized tests of wearable PSCs. Then, representative advances are summarized. Finally, we propose a comprehensive summary from the perspectives of both optoelectronics and mechanics for future research in wearable PSCs and provide an overview of possible integrated devices.