Core Viewpoint - The article highlights the development of a flexible perovskite solar cell phone case by a team at Nanhua University, which can charge devices using sunlight without the need for an external power source [1][3]. Group 1: Technology and Innovation - The flexible perovskite solar cell is lightweight, bendable, and can be applied to various surfaces such as backpacks and drone wings, addressing the limitations of traditional rigid solar panels [3][4]. - The project team focuses on overcoming three main technical challenges: the brittleness of ITO electrodes, the fragility of perovskite films, and the separation at the interlayer interface [3][4]. - Innovations include the development of a PEDOT:PSS transparent flexible electrode to replace brittle ITO materials, and the introduction of grain molecular bridging technology to enhance film durability [4][6]. Group 2: Market Potential and Applications - The technology has resulted in small-area battery devices and large-area flexible battery modules, with successful applications in three companies and an intention to order worth 10 million yuan [6]. - The global market for perovskite solar cells is projected to reach nearly $250 million by 2024, with a compound annual growth rate of 71.5% expected by 2032 [6]. - The project team aims to optimize material formulations and production processes to enhance efficiency and uniformity, targeting a future efficiency of 90% after 10,000 bends [6].