Journal
ACS NANO
Volume 3, Issue 10, Pages 3057-3062Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn900777k
Keywords
nanowires; zinc oxide; photoelectron spectroscopy; work function; fermi level; self-assembled monolayers
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Funding
- American Heart Association
- U.S. National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1109591] Funding Source: National Science Foundation
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ZnO nanowires (NWs) are emerging as key elements for new lasing, photovoltaic and sensing applications but elucidation of their fundamental electronic properties has been hampered by a dearth of characterization tools capable of probing single nanowires. He rein, ZnO NWs were synthesized in solution and integrated into a low energy photoelectron spectroscopy system, where quantitative optical measurements of the NW work function and Fermi level location within the band gap were collected. Next, the NWs were decorated with several dipolar self-assembled monolayers (SAMS) and control over the electronic properties is demonstrated, yielding a completely tunable hybrid electronic material. Using this new metrology approach, a host of other extraordinary interfacial phenomena could be explored on nanowires such as spatial dopant profiling or heterostructures.
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