Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 11, Pages 7070-7076Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b12740
Keywords
interface engineering; tandem solar cells; perovskite solar cells; inverted structure; polymer solar cells; fullerene interlayers; high open-circuit voltage; high efficiency
Funding
- Office of Naval Research, Materials Division [N00014-15-1-2244]
- Department of Energy of Energy Frontier Research Center at the University of Massachusetts [DOE DE-SC0001087]
- Samsung Foundation
- U.S. National Science Foundation [DMR-0820506, MRI-0923105]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0820506] Funding Source: National Science Foundation
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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.
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