Abstract
We analyze the effect of functionalization in the surface of zinc oxide crystal structure by 3-mercaptopropionic acid. X-ray powder diffraction data and extended x-ray absorption fine structure studies confirms a wurtzite structure. However, the morphology of the surface seems to be reduced and shows a film-like surface as demonstrated by x-ray absorption near edge structure and scanning electron microscopy. As a result of surface functionalization, the energy levels of the semiconductor were shifted toward reductive potentials (by 50 mV) as determined by diffuse reflectance and cyclic voltammetry.
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Acknowledgments
The authors want to thank Dr. Victor M. Rodriguez from Universidad Metropolitana, Kenneth David Finkelstein, and Matthew James Ward from CHESS and Dr. Carlos R. Cabrera from the University of Puerto Rico for constructive discussion during the preparation of this manuscript. Financial support was possible due to PR REU: Research training in cross-disciplinary chemical sciences. NSF CHE 1262826.
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The supplementary material for this article can be found at http://dx.doi.org/10.1557/mrc.2016.14.
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de los Cepeda-Perez, M.A., Reyes-Marte, C.M., Carrasquillo, V.A. et al. Effect of the ligand in the crystal structure of zinc oxide: an x-ray powder diffraction, x-ray absorption near-edge structure, and an extended x-ray absorption fine structure study. MRS Communications 6, 93–97 (2016). https://doi.org/10.1557/mrc.2016.14
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DOI: https://doi.org/10.1557/mrc.2016.14