Understanding Charge Transfer in Carbon Nanotube–Fullerene Bulk Heterojunctions

Journal Article · Fri Mar 27 04:00:00 EDT 2015 · ACS Applied Materials and Interfaces

DOI:https://doi.org/10.1021/acsami.5b01536· OSTI ID:1385951

Gong, Maogang; Shastry, Tejas A.; Cui, Qiannan; Kohlmeyer, Ryan R. ^[1]; Luck, Kyle A.; Rowberg, Andrew; Marks, Tobin J.; Durstock, Michael F. ^[2]; Zhao, Hui; Hersam, Mark C.; Ren, Shenqiang

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1. National Research Council, Washington, D.C. 20001, United States; Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States
2. Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States

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.

• Research Organization: Energy Frontier Research Centers (EFRC) (United States). Argonne-Northwestern Solar Energy Research Center (ANSER)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• DOE Contract Number: SC0001059
• OSTI ID: 1385951
• Journal Information: ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 13 Vol. 7; ISSN 1944-8244
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
bio-inspired
catalysis (heterogeneous)
catalysis (homogeneous)
charge transport
defects
electrodes - solar
hydrogen and fuel cells
materials and chemistry by design
membrane
optics
photosynthesis (natural and artificial)
solar (fuels)
solar (photovoltaic)
spin dynamics
synthesis (novel materials)
synthesis (self-assembly)