Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 13, Pages 7428-7435Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b01536
Keywords
nanocarbon; fullerenes; bulk heterojunction; charge transfer; Mechanism
Funding
- Army Research Office - Young Investigator Program [W911NF-14-1-0443]
- Department of Energy-Basic Energy Sciences [DE-FG02-13ER46937]
- National Science Foundation - DMR [0954486]
- Argonne-Northwestern Solar Energy Research (ANSER) Center, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001059]
- National Science Foundation
- National Research Council
- NSF-MRSEC [DMR-1121262]
- Keck Foundation
- State of Illinois
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0954486] Funding Source: National Science Foundation
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Semiconducting single-walled carbon nanotube/fullerene bulk heterojunctions exhibit unique optoelectronic properties highly suitable for flexible, efficient, and robust photovoltaics and photodetectors. We investigate charge-transfer dynamics in inverted devices featuring a polyethylenimine-coated ZnO nanowire array infiltrated with these blends and find that trap-assisted recombination dominates transport within the blend and at the active layer/nanowire interface. We find that electrode modifiers suppress this recombination, leading to high performance.
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