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Developing an additive to effectively regulate the perovskite crystallization kinetics for the optimized optoelectronic properties of perovskite film plays a vital role in obtaining high efficiency and stable perovskite solar cells (PSCs). Herein, a new additive is designed and directly synthesized in perovskite precursor solution by utilizing an addition reaction between but‐3‐yn‐1‐amine hydrochloride...
Piezocatalytic therapy is a new‐emerging reactive oxygen species (ROS)‐enabled therapeutic strategy that relies on built‐in electric field and energy‐band bending of piezoelectric materials activated by ultrasound (US) irradiation. Despite becoming a hot topic, material development and mechanism exploration are still underway. Herein, as‐synthesized oxygen‐vacancy‐rich BiO2−x nanosheets (NSs) demonstrate...