Green Anti-solvent Processed Efficient Flexible Perovskite Solar Cells

【作者】 辛德雨； 王增华； 张敏； 郑霄家； 秦勇； 朱建国； 张文华；

【机构】 中国工程物理研究院化学材料研究所,四川新材料研究中心； 四川大学材料科学系； 兰州大学物理科学与技术学院纳米科学与纳米技术研究所；

【摘要】 Flexible perovskite solar cells(PSCs) possess compatible features with low-cost, high throughput production approaches, showing great potentials in wearable, portable, flyable, and deployable applications. However, flexible PSCs with superior efficiency are commonly fabricated with an anti-solvent assisted crystallization(ASAC) method, which uses highly toxic solvents as the processed solvents. In this work, we use environmentally benign anti-solvents for the fabrication of flexible PSCs.Benefiting from the low-temperature solution processability of a high quality SnO2 electron transport layer(ETL) with superior electron extraction and transfer features, flexible PSCs show an impressive PCE over 17% under reverse scan. This, to the best of our knowledge, is among the highest performances for flexible PSCs and is the first report for flexible PSCs fabricated by green anti-solvent processed techniques. These results provide new opportunities for environmental-friendly manufacturing of high performance flexible PSCs.更多还原

【Abstract】 Flexible perovskite solar cells(PSCs) possess compatible features with low-cost, high throughput production approaches, showing great potentials in wearable, portable, flyable, and deployable applications. However, flexible PSCs with superior efficiency are commonly fabricated with an anti-solvent assisted crystallization(ASAC) method, which uses highly toxic solvents as the processed solvents. In this work, we use environmentally benign anti-solvents for the fabrication of flexible PSCs.Benefiting from the low-temperature solution processability of a high quality SnO2 electron transport layer(ETL) with superior electron extraction and transfer features, flexible PSCs show an impressive PCE over 17% under reverse scan. This, to the best of our knowledge, is among the highest performances for flexible PSCs and is the first report for flexible PSCs fabricated by green anti-solvent processed techniques. These results provide new opportunities for environmental-friendly manufacturing of high performance flexible PSCs.更多还原