Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3266868
Keywords
dielectric materials; lattice constants; multilayers; photoemission; plasmons; silver
Categories
Funding
- Center for Nano Science and Technology National Taiwan University, Taiwan, Republic of China [97R0044]
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The emission spectra of the trilayer Ag/dielectric/Ag plasmonic thermal emitter (PTE) with different lattice type, hole shape, and dielectric material were investigated. It is found that the position and number of thermal emission peak of the PTE are determined by the lattice type not by the hole shape and dielectric materials. The PTE with hexagonal lattice generates only one strong (1,0) Ag/dielectric emission peak, whereas a similar PTE with square lattice generates two strong (1,0) and (1,1) Ag/dielectric emission peaks, their relative intensities follow the blackbody radiation law. This phenomenon suggests the coupling of Ag/dielectric and Ag/air modes.
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