High Efficiency Tandem Thin-Perovskite/Polymer Solar Cells with a Graded Recombination Layer

作者：Liu Yao; Renna Lawrence A; Bag Monojit; Page Zachariah A; Kim Paul; Choi Jaewon; Emrick Todd^*; Venkataraman D^*; Russell Thomas P^*

来源：ACS Applied Materials & Interfaces, 2016, 8(11): 7070-7076.

DOI：10.1021/acsami.5b12740

• interface engineering
• tandem solar cells
• perovskite solar cells
• inverted structure
• polymer solar cells
• fullerene interlayers
• high open-circuit voltage
• high efficiency

Perovskite-containing tandem solar cells are attracting attention for their potential to achieve high efficiencies. We demonstrate a series connection of a similar to 90 nm thick perovskite front subcell and similar to 100 nm thick polymer:fullerene blend back subcell that benefits from an efficient graded recombination layer containing a zwitterionic fullerene, silver (Ag), and molybdenum trioxide (MoO3). This methodology eliminates the adverse effects of thermal annealing or chemical treatment that occurs during perovskite fabrication on polymer-based front subcells. The record tandem perovskite/polymer solar cell efficiency of 16.0%, with low hysteresis, is 75% greater than that of the corresponding similar to 90 nm thick perovskite single-junction device and 65% greater than that of the polymer single-junction device. The high efficiency of this hybrid tandem device, achieved using only a similar to 90 nm thick perovskite layer, provides an opportunity to substantially reduce the lead content in the, device, while maintaining the high performance derived from perovskites.

• 出版日期2016-3-23