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Tuning the Work Function of Nickel Oxide Using Triethoxysilane Functionalized Monolayers

Journal Article · · Physical Chemistry Chemical Physics
DOI:https://doi.org/10.1039/D0CP03306E· OSTI ID:1766854
The work function of nickel oxide (NiOx) electrodes was tuned by the covalent attachment of commercially available as well as specially synthesized triethoxysilane functionalized molecules with a range of dipole moments. The presence of the silane molecular layers on the NiOx surface was verified using Fourier Transform Infrared (FTIR) spectroscopy and contact angle measurements. While these tests indicated the surface coverage was incomplete, Kelvin probe measurements showed that the coverage was sufficient to change the work function of the NiOx across a range of ~900 meV. Density functional theory (DFT) calculations of the dipole moments of the isolated molecules correlated well with the measured work function changes.
Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
DOE Contract Number:
AC36-08GO28308
OSTI ID:
1766854
Report Number(s):
NREL/JA-5900-79135; MainId:33361; UUID:b7fb126f-b0a9-44fe-864a-af4337c82cb8; MainAdminID:19666
Journal Information:
Physical Chemistry Chemical Physics, Journal Name: Physical Chemistry Chemical Physics Journal Issue: 3 Vol. 23
Country of Publication:
United States
Language:
English

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