Enhanced peak separation in XPS with external biasing

Download

index.pdf

Date

2005-08-15

Author

Ertaş, Gülay
Suzer, S

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

76
views

0
downloads

We have demonstrated that the An 4f peaks of the capped gold nanoparticles deposited on a SiO2 (20 nm)/Si substrate can be separated form the An 4f peaks of a gold metal strip, in contact with the same sample, by application of an external voltage bias to the sample rod while recording the XPS spectra. The external bias controls the flow of low-energy electrons falling on to the sample which in-turn controls the extent of the differential charging of the oxide layer leading to shifts in the binding energy of the gold nanoparticles in contact with the layer. The method is simple and effective for enhancing peak separation and identification of hetero-structures.

Subject Keywords

Surfaces, Coatings and Films

URI

https://hdl.handle.net/11511/42178

Journal

APPLIED SURFACE SCIENCE

DOI

https://doi.org/10.1016/j.apsusc.2004.11.086

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Suitable alkaline for graphene peeling grown on metallic catalysts using chemical vapor deposition KARAMAT, SHUMAİLA; Sonusen, S.; ÇELİK, ÜMİT; UYSALLI, YİĞİT; Oral, Ahmet (Elsevier BV, 2016-04-15) In chemical vapor deposition, the higher growth temperature roughens the surface of the metal catalyst and a delicate method is necessary for the transfer of graphene from metal catalyst to the desired substrates. In this work, we grow graphene on Pt and Cu foil via ambient pressure chemical vapor deposition (AP-CVD) method and further alkaline water electrolysis was used to peel off graphene from the metallic catalyst. We used different electrolytes i.e., sodium hydroxide (NaOH), potassium hydroxide (KOH),...
Current conduction mechanism in Al/p-Si Schottky barrier diodes with native insulator layer at low temperatures ALTINDAL, ŞEMSETTİN; Kanbur, H.; Yildiz, D. E.; Parlak, Mehmet (Elsevier BV, 2007-03-30) The forward bias current-voltage (I-V) characteristics of Al/p-Si (MS) Schottky diodes with native insulator layer were measured in the temperature range of 80-300 K. The obtained zero bias barrier height Phi(B0)(I-V), ideality factor (n) and series resistance (R-s) determined by using thermionic emission (TE) mechanism show strong temperature dependence. There is a linear correlation between the Phi(B0)(I-V) and n because of the inhomogeneties in the barrier heights (BHs). Calculated values from temperatur...
Combined effect of point defects and layer number on the adsorption of benzene and toluene on graphene Akay, Tugce Irfan; Toffoli, Daniele; Toffoli, Hande (Elsevier BV, 2019-06-30) Understanding the adsorption properties of organic molecules on graphene-based substrates is important for such applications as air and water filters. Pristine graphene is often the model substrate used in the theoretical investigations of this problem. While useful, pristine single-layer graphene is however an idealized model. In this work, we assess the effect of the presence of point defects (single vacancy, divacancy, and the Stone-Wales defect) in single-layer and bilayer graphene on the energetics of ...
A feasibility study for controlling self-organized production of plasmonic enhancement interfaces for solar cells Borra, Mona Zolfaghari; Gullu, Seda Kayra; Es, Fırat; Demircioğlu, Olgu; Günöven, Mete; Turan, Raşit; Bek, Alpan (Elsevier BV, 2014-11-01) The decoration of metal nanoparticles (MNPs) by the self-organized mechanism of dewetting is utilized as a suitable method for plasmonic interface integration to large area full-scale solar cell (SC) devices. Reflection measurements are performed on both flat and textured silicon (Si) SCs in order to investigate the local plasmonic resonances of the MNPs. The effects of particle size and thickness of silicon nitride (Si3N4)anti-reflection coating layer are investigated by reflection measurements and the shi...
Assessing effects of (3-aminopropyl) trimethoxysilane self-assembled layers on surface characteristics of organosilane-grafted moisture-crosslinked polyethylene substrate: A comparative study between chemical vapor deposition and plasma-facilitated in situ grafting methods Sarkari, Navid Mostofi; Doğan, Öznur; Bat, Erhan; Mohseni, Mohsen; Ebrahimi, Morteza (Elsevier BV, 2019-12-15) Silane coupling agents can act as bonding intermediates at the interface of two dissimilar materials by altering surface properties. In this study, (3-aminopropyl) trimethoxysilane (APTMS) was used as a silane precursor for vapor-phase deposition on organosilane-grafted moisture-crosslinked polyethylene (Si-XLPE) substrate. Chemical vapor deposition (CVD) and plasma-facilitated in situ grafting methods (grafting-from and grafting-onto) were employed to graft APTMS, and the consequent effects on surface of S...

Citation Formats

G. Ertaş and S. Suzer, “Enhanced peak separation in XPS with external biasing,” APPLIED SURFACE SCIENCE, pp. 12–15, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42178.