According to the Yonhap News Agency reported on September 22, Professor Kim Tae-ho of the Chemical Engineering Department of Korea’s Pohang University and the Li Junyu team of integrated courses used food additives made from walnut spices as raw materials to create an environmentally friendly and efficient conductive substance that can be used Perovskite solar cells were produced. The results have been published on the online edition of the American Journal of Chemical Society, authoritative journal of the chemical industry.
It is reported that the perovskite material is lighter than silicon, and the production cost is also lower, so it is attracting attention in the solar cell industry. It is reported that perovskite solar cells generate electrons and electron holes after receiving sunlight. At this time, they need an efficient medium to transport them to the electrodes. Prior to this, perovskite solar cells had been using toxic chlorobenzene as their conducting medium.
The research team successfully developed a more environmentally friendly conductive material using walnut spice food additives, which can replace chlorobenzene to produce perovskite solar cells. Li Junyu said that this material can increase the efficiency of the polymer by 18% without changing the photoelectric properties, and this efficiency will not fade with time. This discovery is expected to contribute to the development of the conductive polymer industry.
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