Recently, the Graduate School of Okinawa University of Science and Technology has developed a new all-inorganic perovskite solar cell that solves three key issues that plagued solar cell technology: efficiency, stability, and cost.
The sun releases tremendous energy at the center of the solar system. Solar energy uses this part of energy. This is one of the key goals for achieving sustainable energy supply.
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 characteristics 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 perovskite structure. Perovskite is a kind of mineral found on the earth. It is composed of calcium, titanium and oxygen in a specific molecular arrangement. Scientists have studied it and its Material with the same crystal structure, that is, perovskite structure material.
Perovskite materials are useful as solar collector active layers because they absorb light efficiently 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 at high temperatures, 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 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.
