Infrared surface plasmon resonance of AZO-Ag-AZO sandwich thin films
| Autor: | Stefan Franzen, Alex Welsh, Joshua T. Guske, J. M. Brown |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Silver Light business.industry Surface plasmon Schottky effect chemistry.chemical_element Membranes Artificial Zinc Surface Plasmon Resonance Atomic and Molecular Physics and Optics Optics chemistry Materials Testing Scattering Radiation Thin film Surface plasmon resonance Zinc Oxide business Layer (electronics) Refractive index Plasmon |
| Zdroj: | Optics express. 20(21) |
| ISSN: | 1094-4087 |
| Popis: | Near-infrared surface plasmon resonance (SPR) spectra were collected of thin multilayer films of aluminum-doped zinc oxide (AZO) / silver (Ag) / AZO on BK-7 glass in the Kretschmann configuration in air, with the silver layer thickness varying from 5 nm to 50 nm. The SPR results were interpreted by modeling the reflectance with a five-layer transfer-matrix method, with the aid of a simplex algorithm. The model indicated that the Ag plasma frequency was significantly higher than the bulk value, possibly due to Schottky effect charge transfer from the AZO to the Ag layer. Continuous silver films were made as thin as 10 nm, indicating an inhibition of metal island formation for Ag deposited on AZO. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|