Premium
Au and Pt Diffusion in Electrodeposited Amorphous Sb 2 Te 3 Thin Films
Author(s) -
Ihalawela Chandrasiri A.,
Sundararajan Mayur,
Cooper Kevin W.,
Kordesch Martin E.,
Ingram David C.,
Lin Xiao-Min,
Chen Gang
Publication year - 2021
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202000428
Subject(s) - amorphous solid , materials science , thin film , diffusion , rutherford backscattering spectrometry , substrate (aquarium) , electrolyte , analytical chemistry (journal) , crystallography , chemistry , nanotechnology , electrode , thermodynamics , geology , physics , oceanography , chromatography
Amorphous Sb 2 Te 3 thin films are synthesized using electrodeposition in different thicknesses to explore their solid electrolytic nature with respect to some noble metals. Au and Pt are used as the substrate materials and thermally diffused into the Sb 2 Te 3 films under passivated and nonpassivated conditions. Rutherford backscattering spectrometry is used to study the Au and Pt diffusion into the films as a function of depth. It is found that Au diffuses into the Sb 2 Te 3 thin films even at room temperature. In contrast, there is no observable diffusion of Pt at room temperature. At a higher temperature (i.e., 200 °C), both Au and Pt diffuse into the Sb 2 Te 3 thin films and Au diffusion is more significant than Pt. The findings suggest that amorphous Sb 2 Te 3 can be used as a good solid electrolyte to permit the diffusion of some noble metals such as Au and Pt.