Metal Cluster's Effect on the Optical Properties of Cesium Bromide Thin Films
Kuldeep Kumar, P. Arun, Chhaya Ravi Kant, Bala Krishna Juluri
TL;DR
This paper investigates how metal clusters influence the optical properties of cesium bromide thin films, revealing surface plasmon resonance effects due to embedded cylindrical metal rods, with implications for optical material design.
Contribution
It introduces a theoretical model linking metal cluster morphology to optical behavior in cesium bromide films, supported by experimental observations.
Findings
Red shift in UV-visible absorption peaks over time
Decrease in grain size observed structurally
Surface plasmon resonance explained by embedded cylindrical rods
Abstract
Cesium Bromide films grown of glass substrates by thermal evaporation showed interesting optical properties. The UV-visible absorption spectra showed peaks which showed red shift with time. Structural and morphological studies suggested decrease in grain size with time which was unusual. Theoretical simulation shows the optical behaviour to be due to surface plasmon resonance resulting from Cesium clyindrical rods embedded in the films.
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