Wedoany.com Report on Feb 26th, Researchers from the Institute of Materials Science of Seville (ICMS) in Spain have successfully developed a perovskite-based hybrid device capable of simultaneously generating electricity from both rainwater and sunlight. This innovation addresses the challenge of reduced efficiency in traditional solar cells during cloudy or rainy weather. It is expected to promote the widespread application of the Internet of Things (IoT) and outdoor environmental monitoring sensors.

Perovskite materials are considered an ideal choice for solar cells due to their high energy conversion efficiency and low cost, but they face reliability challenges. The ICMS team constructed an ultra-thin film that not only protects the chemical stability of the perovskite cell but also enables it to harvest energy from raindrops. This film is less than 100 nanometers thick—far thinner than a human hair—and is fabricated using plasma technology, offering both encapsulation protection and triboelectric power generation functions.

Experimental data show that a single raindrop can generate a voltage of up to 110 volts, sufficient to power small portable devices. ICMS researcher Carmen Lopez stated, "Our work presents an advanced solution by combining perovskite solar cell photovoltaic technology with triboelectric nanogenerators in a thin-film configuration, thereby demonstrating the feasibility of implementing two energy harvesting systems."

This perovskite battery technology offers a new energy solution for IoT devices, especially in rainy regions where traditional solar cell performance is limited. It can power devices such as LED circuits, bridge monitoring sensors, and precision agriculture environmental sensors, enhancing energy autonomy. In a paper published in the journal *Nano Energy*, the researchers noted that the plasma technology coating has multifunctional potential and can be developed into hybrid solar-rain power generation systems.