Equip perovskite solar cells with "super armor" to ensure more stable and efficient electron transfer. On April 13th, it was learned from Fujian Agriculture and Forestry University that Lin Zhichao, a young teacher in the Green Optoelectronic Devices and Energy Storage Battery team of the School of Materials Engineering at the university, collaborated with teams such as Liang Chao from Xi'an Jiaotong University and Li Meng from Henan University to combine embedded metal fullerenes with polymers, achieving significant breakthroughs in solving the energy conversion efficiency and stability problems of perovskite solar cells. The relevant results were published in the international journal Nature. Perovskite solar cells, as a new type of photovoltaic device, have performance comparable to traditional silicon solar cells and significant cost advantages, and can be widely used in fields such as photovoltaic power generation and flexible electronics. Lin Zhichao introduced that currently, waterproof polymers are commonly used as the encapsulation interface layer of perovskite solar cells to block the erosion of water and oxygen on the perovskite layer, suppress ion diffusion, and improve its long-term operational stability. However, when the polymer layer is too thick, there will be an electron shielding effect, resulting in a loss of performance in perovskite solar cells, making it difficult to balance stable operation and high efficiency at the same time. Fullerenes, as an allotrope of carbon, have efficient electronic conductivity properties. This study is equivalent to putting a 'super armor' called 'fullerene polymer coupling layer' on perovskite solar cells, weaving a magical material called 'fullerene' in the shape of a soccer ball inside it, thereby achieving efficient electron conduction, "said Lin Zhichao. At the same time, the research team also embedded neodymium metal in the fullerene material, like installing an 'electric motor', making electron transmission faster and more stable. Experimental data shows that wearing this "super armor" perovskite solar cell can achieve an energy conversion efficiency of up to 26.78%, which is significantly higher than previous reports and very close to the highest efficiency of 27.81% currently available for commercial silicon solar cells. However, its production cost is only about half of that of silicon solar cells, highlighting the huge application prospects of this green new energy technology. (New Society)