Share Email Print
cover

Proceedings Paper

In-situ STM studies of thallium underpotential deposition on Au(111) single-crystal electrode in acid solution
Author(s): Wanda Polewska; Radoslav Adzic
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The structure of electrodeposited Tl adlayers on Au(111) in 0.1 M. HClO4 has been investigated using in-situ scanning tunneling microscopy method. Incommensurate, rotated hexagonal (RHCP) Tl adlayer was found, within a wide potential window, between Tl bulk deposition at -0.7 V and -0.4 V. This adlayer is closely packed with Tl interatomic distance of 3.4 +/- 0.2 angstroms, its rotation from the gold substrate axis is 60 +/- 10 and its coverage is 0.74. At slightly more positive potentials, between -0.45 V and -0.37 V, low coverage 2 X 2 phase of Tl was found, coexisting together with RHCP monolayer. At the potential region between -0.35 V and 0.8 V both ordered Tl phases disappeared and instead the formation of considerable amount of pits at the surface has been observed.

Paper Details

Date Published: 8 April 1999
PDF: 4 pages
Proc. SPIE 3725, International Conference on Solid State Crystals '98: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology, (8 April 1999); doi: 10.1117/12.344745
Show Author Affiliations
Wanda Polewska, Poznan Univ. of Technology (Poland)
Radoslav Adzic, Brookhaven National Lab. (United States)


Published in SPIE Proceedings Vol. 3725:
International Conference on Solid State Crystals '98: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology
Antoni Rogalski; Jaroslaw Rutkowski, Editor(s)

© SPIE. Terms of Use
Back to Top