Thiol dosing of ZnO single crystals and nanorods: Surface chemistry and photoluminescence
J Singh, J Im, EJ Watters, JE Whitten, JW Soares… - Surface science, 2013 - Elsevier
Adsorption of thiols on ZnO (0001) and ZnO nanorods has been investigated using X-ray
and ultraviolet photoelectron spectroscopies (XPS and UPS). Ultrahigh vacuum (UHV)
dosing of sputter-cleaned ZnO (0001) with methanethiol (MT), 1-dodecanethiol (DDT), and 3-
mercaptopropyltrimethoxysilane (MPTMS) leads to S2p peaks with a binding energy of
163.3 eV. Similar results for MPTMS are obtained for sputter-cleaned ZnO (0001) that is pre-
dosed with water to form hydroxyl groups. In all cases, the absence of a free thiol S2p peak …
and ultraviolet photoelectron spectroscopies (XPS and UPS). Ultrahigh vacuum (UHV)
dosing of sputter-cleaned ZnO (0001) with methanethiol (MT), 1-dodecanethiol (DDT), and 3-
mercaptopropyltrimethoxysilane (MPTMS) leads to S2p peaks with a binding energy of
163.3 eV. Similar results for MPTMS are obtained for sputter-cleaned ZnO (0001) that is pre-
dosed with water to form hydroxyl groups. In all cases, the absence of a free thiol S2p peak …
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