Title :
Emission Enhancement in Ag/
/Ag Thermal Emitter by Using a Hexagonal Dimple Array
Author :
Yi-Tsung Chang ; Yu-Cheng Chen ; Ming-Ru Tang ; Wei-Chun Chi ; Meng-Han Tsai
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
This letter describes the successful fabrication of a novel tri-layer Ag/SiO2/Ag plasmonic thermal emitter with circular and square hole shapes at top silver film arranged in a hexagonal dimple array. The proposed design improves the emission intensity and reduces the full width half maximum. Experimental results indicate that the proposed design increases the emission intensity at 200°C from 30.5 to 42.3 mW/cm2 for the hexagonal circular hole array, as well as increases the same intensity from 43.3 to 79.3 mW/cm2 for the hexagonal square hole array.
Keywords :
metallic thin films; optical arrays; optical design techniques; optical fabrication; optical multilayers; plasmonics; silicon compounds; silver; Ag-SiO2-Ag; circular hole shapes; emission enhancement; emission intensity; full width half maximum; hexagonal circular hole array; hexagonal dimple array; hexagonal square hole array; silver film; square hole shapes; temperature 200 degC; trilayer plasmonic thermal emitter; Surface plasmon polaritons; full width half maximum (FWHM); hexagonal dimple array; square hole array;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2264506