Temperature dependent optical properties of c-axis oriented ZnO thin film were investigated using surface plasmon resonance (SPR) technique. SPR data for double layer (prism-Au-ZnO-air) and single layer (prism-Au-air) systems were taken over a temperature range (300–525 K). Dielectric constant at optical frequency and real part of refractive index of the ZnO film shows an increase with temperature. The bandgap of the oriented ZnO film was found to decrease with rise in temperature. The work indicates a promising application of the system as a temperature sensor and highlights an efficient scientific tool to study optical properties of thin film under varying ambient conditions.
Published in:
Applied Physics Letters
(Volume:95
,
Issue:
7
)
Date of Publication:
Aug 2009
- Page(s):
-
071106
-
071106-3
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.3206954
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
25 August 2009
- Issue Date :
-
Aug 2009