Rapid crystallization of perovskite films with high efficiency for perovskite solar cell
발표자
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초록
내용
Perovskite solar cells (PSCs) are considered to be the next generation solar cells that are most likely to be commercialized due to their advantages such as high efficiency and inexpensive fabrication cost. Currently, PSCs based on formamidinium lead iodide (FAPbI3) are fabricated by process requiring long annealing time (10 ~ 60 min). However, considering roll-to-roll fabrication for mass production, the long annealing time causes a rise in the cost of fabrication process. Therefore, in order to decrease the cost of fabrication process, short annealing time needs. Also, even with short annealing time, device performance of solar cells should not be degraded. Here, we proposed to add cesium lead chloride (CPC) as an additive in the FAPbI3 perovskites in order to produce a highly crystalline perovskite film even at short heat treatment time. In this study, we made efficiency of exceeding 21% through 3 min of annealing time and confirmed enhanced quality of perovskite film by adding CPC.