Translator Disclaimer
31 October 2001 Raman spectroscopic investigation of reactively sputtered silver oxide layers: a ready-made silver nanocluster precursor for optical plasmon generation
Author Affiliations +
Abstract
Silver oxide layers were prepared by reactive r.f. magnetron sputtering of a silver target in oxygen containing atmosphere. Spectroscopic analysis of the films revealed a gradually composition change from Ag over Ag2O to AgO with increasing oxygen addition. Raman spectroscopy in combination with optical transmission measurements indicated that the AgOx constituents readily decompose by laser irradiation to optically active silver scattering centers and oxygen. Surface enhanced Raman scattering (SERS) of carbon traces in the silver oxide layers verified the potential to excite local surface plasmons in such silver aggregates. Furthermore, SERS activity of the activated layers is demonstrated by the clear amplification of Raman bands of low concentrated chemicals. The example of the model molecule benzoic acid (BA) applied to AgO films on glass substrates allows to observe the activation process in situ. SER characteristics were found to be dependent on the silver oxide film constitution and the state of intermediate silver cluster formation along with the applied photoactivation-time and power.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dorothea Buechel, Christophe Mihalcea, Nobufumi Atoda, and Junji Tominaga "Raman spectroscopic investigation of reactively sputtered silver oxide layers: a ready-made silver nanocluster precursor for optical plasmon generation", Proc. SPIE 4469, Raman Spectroscopy and Light Scattering Technologies in Materials Science, (31 October 2001); https://doi.org/10.1117/12.447376
PROCEEDINGS
8 PAGES


SHARE
Advertisement
Advertisement
Back to Top