Application of mixed-organic-cation for high performance hole-conductor-free perovskite solar cells

作者：Xiao, Meng; Zhao, Li^*; Wei, Shoubin; Li, Yanyan; Dong, Binghai; Xu, Zuxun; Wan, Li; Wang, Shimin^*

来源：Journal of Colloid and Interface Science, 2018, 510: 118-126.

DOI：10.1016/j.jcis.2017.09.056

• Perovskite solar cells
• Mixed cations
• Hole-conductor-free
• Carbon electrode

ABX(3)-type organic lead halide perovskites have gained increasing attention as light harvester for solar cells due to their high power conversion efficiency (PCE). Recently, it has become a trend to avoid the use of expensive hole-transport materials (HTMs) and precious metals, such as Au, to be competitive in future commercial development. In this study, we fabricated mixed-cation perovskite-based solar cells through one-step spin-coating using methylammonium (CH3NH3+) and formamidinium (HN = CHNH3+) cations to extend the optical absorption range into the red region and enhance the utilization of solar light. The synthesized hole-conductor-free cells with carbon electrode and mixed cations exhibited increased short-circuit current, outperforming the cells prepared with pure methylammonium, and PCE of 10.55%. This paper proposes an efficient approach for fabricating high-performance and low-cost perovskite solar cells.

• 出版日期2018-1-15
• 单位湖北大学