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Research At The Atomic Level Has Driven The Development Of More Durable Solar Cells
Nov 14, 2017

原子层面的研究推动了更持久太阳能电池发展之路

Researchers at imperial college London have identified a mechanism for the rapid degradation of the calcium-titanium mine, which will pave the way for more efficient and long-lasting solar cells.

Research at imperial college London suggests that "superoxide" can destroy calcium and titanium minerals.

Now researchers at imperial college London have discovered the mechanism of superoxide formation and destruction.

As the light hits the calcium titanium mine, the released electrons react with oxygen to form superoxide.

The gaps in the nanostructure of the calcium and titanium deposits taken by iodide can help the formation of superoxide, which can also be used to make use of these iodine deficiency defects.

Researchers can supply additional iodine ion to extend through perovskite battery life, but a better solution may need scientists to rethink perovskite manufacturing process, prevent the formation of defects.

Chief researcher at imperial college London, chemist Nicholas Aristidou said at a news conference, "confirmed the iodine ion defects in role in the formation of superoxide, us by filling in the space of additional iodine ion success provides the stability of the material.

By controlling the type and density of existing defects, a new method for optimizing the material to improve its stability is pioneered.

At present, engineers have used glass to block the oxidation of the perovskite battery, but this strategy limits the versatility of the flexible perovskite.

Saif Haque, a chemist at imperial college London, commented that "glass packaging limits transport and increases the weight and cost of the battery.

Improving the calcium titanium battery material itself is the best solution.

The latest research is published in the journal Nature Communications, so improving the calcium and titanium battery material is not out of reach.

"We have now provided a way to understand this process at the atomic level and allow for the design of improved device stability," Haque said.


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