Solar cells can become more cheaper for us

Researchers have found that more and more types of thin-film solar cells for the manufacture of giving it a growing role in the ambient air, more and more types of ambient air for the production of solar cells to give it a growth role. This may allow the manufacture of solar cells significantly cheaper, published in Materials Chemistry.

Because the harvest of light found its application for electricity in 2009, applied research of solar cells has been skyrocketing. Manufacturing technology being developed around the world to enhance their power conversion efficiency. By making the material easier to mass production OIST research gives perovskite solar arm and then shot.

Previous studies have concluded that exposure to perovskite films to ambient air harmful because water and perovskite, which degraded over time response. Therefore, it was felt that the material had to be prepared to use heat in the water environment is called annealing.

During 45 minutes of annealing contained OIST researchers to investigate the impact of water on the formation of perovskite at temperatures between 105-125 degrees Celsius. They grew up in a perovskite, and has been proven to work better solar cells. Then, they compared the perovskite thin film is formed and it is formed in a nitrogen atmosphere in humid air, and the film was found to improve the growth actually receiving a lead larger than the grain size is usually carried out in the presence of moisture. The film growth is slow, so that large particles can be formed.

Larger grains of perovskite solar cells more efficient. Highest efficiency achieved by studying 12.7%. The other teams have achieved higher efficiency results in OIST ensure future industry does not have to invest in expensive climate control mechanisms to keep moisture down to one millionth. Unrelated to the cost of air annealing.

Overall, 12.7% of the efficiency by no means limit this manufacturing technique, and it is possible to obtain larger grain size. Although the global research and development to continue to improve the efficiency of solar cells, these results may provide a way to boost the industry.