Perovskite solar cells under the proper pressure for performance improvement

Solar photovoltaic net news: the United States and Nigeria's scientists studied the pressure for the impact of perovskite solar cells, the results showed that the proper pressure can improve the battery efficiency of 40% ( Relative) 。 If the pressure is too big, may also cause craze.

from Nigeria Africa university of science and technology ( AUST） Researchers at Worcester polytechnic institute staff cooperation with the United States a new method is proposed. By the materials research of organic thin film solar cells, solar portal, the team by using the calculation analysis and practical experiment study pressure on the impact of perovskite battery. Before at brown university in Rhode Island, a study shows how the correct application of pressure and perovskite cracks of solar cells, but the information about how to put pressure in the process of production is still very little.

the team using the spin coating method created 85 methyl ammonium iodide lead-based perovskite solar cells, and then to its 1 - Palmer (10 million MPa） Pressure. Results published in the paper the perovskite pressure assisted manufacturing of solar cells, solar power network, the conclusion shows that applying 0 7 mpa pressure can increase the battery conversion efficiency. Pressure such as more than 7 mpa, solar power network, the efficiency because the device is damaged and the fall again.

in 0 Under the pressure of 7 mpa, 9. 84% of the initial cell efficiency promoted to 13. Increased by 67% and in pressure reduced to 10 to 10 mpa. 89%. This initial increase is mainly due to improve the surface contact between the cell layer and increase the density of the material. If more than 7 mpa pressure, perovskite damage, cell layer began to blend with each other.

　　“ These Revelations & hellip; … Auxiliary process design is very important for pressure, can be used in the manufacture of perovskite solar cell & throughout; AUST, scientists said. “ Pressure indicated the significant effect of laminated, cold welding and rolling/volume for processing such as pressure aided process can be used in the manufacture of superior performance of perovskite solar cells. ”

the team concluded that does not take into account more than 7 mpa pressure, solar photovoltaic (pv) network, and proposed the development process of the pressure assisted manufacturing process interlayer contact, hierarchical compaction, infiltration and potentially damage the comprehensive consideration of the effect.

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