Progress in the research on high-efficiency flexible perovskite solar cells in Ningbo Materials

With the rapid advancements in photovoltaic technology, perovskite solar cells (PSCs) have emerged as a promising alternative to traditional crystalline silicon-based batteries due to their high efficiency and cost-effectiveness. Among these, flexible perovskite solar cells (f-PSCs) hold immense potential for applications in photovoltaic building integration (BIPV), distributed energy systems, and portable electronics. Despite their promise, f-PSCs currently lag behind rigid devices made from conductive glass in terms of photoelectric conversion efficiency (PCE). This discrepancy primarily stems from the challenges associated with achieving uniform and high-quality perovskite film deposition on flexible substrates. To address this challenge, a team led by Dr. Ge Ziyi at the Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, has developed a novel approach using a bottom-up strategy to enhance the performance of f-PSCs. By modifying the interface between the electron transport layer (ETL) and the perovskite layer, the researchers incorporated 3-aminopropionate hydrogenoidate (3AAH) into the ETL prior to fabrication. This modification not only improves the quality of the ETL but also anchors the growth of perovskite grains, reducing defects at the interface. During the annealing-cooling process, the residual tensile stress in the perovskite film is effectively released and transformed into beneficial microcompressive stress, further enhancing the overall stability and efficiency of the cell. The outcome of this research is impressive: the fabricated flexible perovskite solar cell achieved a remarkable photoelectric conversion efficiency of 23.4%, marking one of the highest efficiencies reported globally for flexible perovskite batteries. Additionally, the device demonstrated excellent mechanical flexibility, retaining over 84% of its initial PCE after undergoing 4,000 cycles of bending with a radius of 5 mm. This breakthrough paves the way for narrowing the efficiency gap between flexible and rigid perovskite devices, accelerating their transition toward commercialization. This pioneering study was published in *Advanced Functional Materials* under the title "Pre-buried ETL with Bottom-up Strategy Towards Flexible Perovskite Solar Cells with Efficiency Over 23%" (DOI: 10.1002/adfm.202214788). The research was generously supported by the National Outstanding Youth Fund and the National Natural Science Foundation of China.  (a) Schematic illustration of the flexible perovskite solar cell device with 3AAH pre-embedded ETL and its corresponding J-V curve. (b) Mechanical bending test results showing the retention of efficiency after 4,000 bending cycles at a radius of 5 mm. This innovative approach not only advances the field of flexible photovoltaics but also brings us closer to realizing sustainable energy solutions through practical and efficient solar technologies.

Bolt And Nut

Plastic fastener is used for corrossive environment, for different application, RMI PLAST offer PVC, PVDF, PP, PA6 materials, it is widely used for equipment and pipes which will touch corrossive liquid. But the weekness of plastic bolt and nuts is it not have strong strength. and high working temperature.

Ningbo RMI Plastic Co.,Ltd offer plastic bolt and nuts with specification:

Size:M3~M20
Material: PVC,PP,PVDF,Nylon

Nylon Nut,Nylon Bolt,PA6 Bolt,Plastic Bolt

Ningbo RMI Plastic Co.,Ltd , https://www.rmiplast.com