Scientists have found that enhances the stability of perovskite solar cells

Solar photovoltaic (pv) net news: according to foreign media reports, perovskite leader is fast becoming efficient solar cells, but it has a very obvious problem - - Too fragile. Now, a team of engineers from purdue university found that by adding a macromolecular can stabilize the material, make its can be stacked layer and in the solar cell and other electronic products.

traditional layer of silicon solar cell is made up of activity, after decades of improvement, solar panels, the efficiency of the equipment has reached more than 20%. The perovskite solar battery in just 10 years to reach the same level. When silicon and perovskite collocation use, solar panels, its efficiency can be as high as 27. 7%.

in addition, the perovskite has a benefit is that the material mass production easier and cheaper, and very thin can print or onto the surface.

but in fact there is a trap - Perovskite are notoriously volatile, so it is easily affected by various elements - - Considering the solar cells exposed to the sun and the rain all day, this is obviously not a good news - - And it can't laminated well.

in the new study, researchers found that a relatively simple method to make it more stable. They added on the surface of the perovskite a rigid molecules called bithiophenylethylammonium. The research team, points out that ion movement was stable in this way, China solar power network, the chemical bonds can prevent this kind of material is too easy to fracture or other layers with perovskite materials mixed.

one of the study's authors Brett Savoie said: & other; If an engineer wants to get the best part of the perovskite A combined with the best part of the perovskite B which is usually impossible, solar portal, because the perovskite will mix together. In this case, you really can make full use of A and B in A material. And it's completely unheard of. ”

in addition, the team also found that by adding the molecule can let perovskite in 100 & deg; C temperature stability. This for need direct exposure to the sun is very important and it also can be used in electronic equipment.

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