Electronic devices with solar cells can convert light energy directly into electrical energy for use. To date, most solar cells are made of silicon, mainly utilizing the properties of this material that can easily absorb light, but the silicon panel's The production cost is very high, so the cost performance has always been a problem.
Scientists have been studying a substitute material made of a perovskite structure. Perovskite is a kind of mineral found on the earth. It consists of a specific molecular arrangement of calcium, titanium and oxygen. Scientists have studied and studied it. Materials with the same crystal structure, that is, perovskite structure materials. Perovskite materials are very practical as solar collector active layers because they can absorb light effectively and, more importantly, are much cheaper than silicon. There are also many practical ways of using this material, for example, it can be dissolved in a solvent and sprayed directly onto the substrate.
However, this material is also not perfect. The perovskite structure material is usually very unstable and unstable when the temperature is too high, which hinders its commercialization.
The Institute of Energy Materials and Surface Science at the Graduate School of Ophthalmology (OIST) was led by Prof. Qi Yaping. He discovered a new type of perovskite material that is stable, efficient, and has a relatively low production cost. The use of solar cells in the future will be even more widely.
Recently, their results were published in Advanced Energy Materials. Dr. Jia Liang and Dr. Liu Zonghao also made significant contributions to this work.
But before perovskite solar cells become commercially viable as silicon solar cells, there are still many challenges to overcome. For example, perovskite solar cells have a lifetime of one or two years, but silicon solar cells can work 20 year.
Qi Yaping and his colleagues will continue to study the efficiency and durability of these new types of batteries, and are making these batteries on a commercial scale. Since the first perovskite solar cell was reported in 2009, the technology has developed rapidly. The future of new batteries can be said to be very bright.