期刊
ACS APPLIED ENERGY MATERIALS
卷 5, 期 10, 页码 12388-12395出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.2c01992
关键词
rutile TiO2; interface engineering; electron transport material; perovskite solar cell
资金
- National Natural Science Foundation of China [61474047, 51972123, U1705256]
- Natural Science Foundation of Fujian Province [2019J02012]
- Fujian Provincial Youth Topnotch Talents Supporting Program
- Graphene Powder & Composite Research Center of Fujian Province [2017H2001]
- Guangdong Province Regional Joint Fund-Youth Fund Project [2021A1515110805]
Research has found that using rutile TiO2 nanoparticles with an average size of 2.1 nm as part of the electron transport layer can improve the performance of perovskite solar cells, especially in suppressing hysteresis effects. Experimental results show that this approach can achieve higher power conversion efficiency, providing insights for the application of perovskite solar cells.
Research on perovskite solar cells has gradually pushed them toward commercial fabrication, and considering the wide range of solar cell applications, it is still interesting to have diverse compositions of devices. The electron transport layer of the perovskite solar cells prepared by the conventional spin-coating method inevitably has many defects, which obviously affect the interface contact and carrier transport performance. Rutile TiO2 nanoparticles with an average size of 2.1 nm used as part of the electron transport layer are obtained by oxidation of Ti3C2 MXene for the first time. A series of test results show that the rutile TiO2 nanoparticles obtained in this way are obviously beneficial to the performance of the device, especially in suppressing the hysteresis effect. A champion power conversion efficiency of 21.55% with a hysteresis index of 0.047 is achieved, which is much better than 19.18% and 0.115 of the control device. This work provides enlightening viewpoints for the application of two-dimensional MXene materials and a new synthetic route in the field of perovskite solar cells.
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