Recently, the team of Han Liyuan of the School of Materials Science and Engineering of Shanghai Jiaotong University has used a more economical and safe method to prepare a large-area perovskite film thinner than the flaps, which is an important step towards achieving large-scale low-cost solar power generation. The research results have been published online in Nature.
“Perovskite materials were first applied to photovoltaic technology in 2009. In just a few years, the photoelectric conversion efficiency of laboratory perovskite solar cells has repeatedly made breakthroughs, and its photoelectric energy conversion efficiency has rapidly increased to 22.1%, exceeding polysilicon. The efficiency level of solar cells, while the cost of power generation is lower than that of silicon cells. Therefore, perovskite solar cells are evaluated as the most competitive and promising photovoltaic technology in the field of photovoltaic research, "Han Liyuan said.
If the battery is to meet the practical needs, the critical area of ​​the perovskite film should be large enough and the quality should be good enough to ensure that the photoelectric energy conversion efficiency of the battery is high enough.
"We spent three years to solve this problem. Based on the preparation of large-area high-quality perovskite film, we have developed a perovskite battery module with an effective area of ​​36.1 square centimeters. It has obtained 12.1% certification for the first time in an international certification body. Efficiency has created the world record for the efficiency of the first large-area perovskite module.†Han Liyuan said that this means that the future of perovskite photovoltaic technology may be large-scale industrialization.
Experts said that this new method for preparing large-area uniform perovskite films provides a new development direction for large-scale production of low-cost perovskite solar cell modules.
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