According to foreign media reports, inspired by the honeycomb structure of insect eyes, a team of Stanford scientists discovered a key method for the development of perovskite solar cells, which will make the batteries more durable. Perovskite solar cells are cheaper and easier to manufacture than conventional silicon solar cells. This perovskite material was first used in solar cells in 2009.

However, a problem faced by this material is that the perovskite's salt crystal structure makes it very fragile compared to ordinary silicon solar cells. Most solar installations, including solar roofs, are flat designs. However, moisture, air, heat, and even prolonged sunlight exposure can cause damage to solar energy devices including perovskite solar cells.

To solve this problem, Stanford University's team of scientists sought inspiration from nature - or more specifically, the eyes of insects. The eyes of their flies are composed of thousands of hexagonal photoreceptor cells and protected by a "bracket". The team decided to follow this model and developed a honeycomb-type perovskite microbattery that is protected by a 0.02-inch hexagonal frame made of low-cost epoxy.

The researchers found that this kind of bracket makes the battery more resistant to cracks, and has little effect on the efficiency of the battery to convert sunlight into electricity.

The team also tested the ability of honeycomb solar cells to withstand extreme conditions, exposing them to 85oC and 85% humidity for six weeks.

The research paper has been published in the Journal of Energy and Environmental Sciences.

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