Flexible wearable sensors are expected to be the future generation of personal health monitoring devices with large‐area, multimodal, multipoint sensing, and complicated data analysis. However, multimaterial interfacial coalescence and mechanical matching critically challenge the advancement of flexible devices and multifunction integration. Graphene, with characteristic carbon sheet 2D material, is endowed with good transparency, stability, superior electron mobility, heat conductivity, excellent flexibility, and mechanical performance. A summary of the progresses of flexible graphene‐based sensors in terms of material processing, sensor configuration, and property is presented. Various assembly structures could perform different electrical behaviors with unitary graphene material. The diversity of graphene‐based temperature, humidity, pressure, strain, and integrated multifunctional sensors developed in recent years is detailed. Benefitting from the commendable flexible mechanical performance and high durability, flexible graphene‐based sensors promote practical applications in body temperature monitoring, voice recognition, pulse‐beating, motion, and respiration detection. Finally, future research following the development trends and challenges of integrated graphene‐based sensors to develop their potential in human health monitoring and human–machine interfaces are discussed.

The in-situ polymerization controlled growth of perovskite has been demonstrated as a general strategy to effectively repair grain boundary defects. However, the highly active, volatile, and brittle cross-linked scaffolds of...

Dramatic development in perovskite solar cells (PSCs) and the widespread application of wearable electronics have attracted extensive research in the area of large-scale flexible solar power sources based on PSCs. Manufacturing of flexible PSCs by printing is considered to be one of the most potential methods. However, it is still a great challenge to print large-area uniform hole transport layers (HTLs) on a rough and soft plastic substrate to achieve flexible PSCs with high efficiency and good stability. Herein, we synthesized a viscous poly­(3,4-ethylene dioxythiophene):graphene oxide (PEDOT:GO) gel and then blade-coated the gel by high-speed shearing to achieve high-quality HTLs with scalable size. The glued HTLs exhibit high viscosity, electrical conductivity, and mechanical flexibility, which enhance the adhesive ability and protect the brittle ITO electrode and perovskite crystals. Due to the gelatinous HTLs, we achieved an optimal efficiency of the flexible PSCs (1.01 cm2) of 19.7%, while that of the large-area flexible perovskite module (25 cm2) exceeded 10%. This is the highest efficiency for reported flexible MAPbI3 PSCs (1.01 cm2). Furthermore, the efficiency retention of the PSCs remains over 85% after 5000 bending cycles, which is of great significance for the practical application of PSCs in portable and wearable electronics.