Nanosilver Colloids-Filled Photonic Crystal Arrays for Photoluminescence Enhancement
1 Division of Nanomechanical System Research, Korea Institute of Machinery & Materials, Daejeon, Republic of Korea
2 Korea Advanced Nanofab Center, Suwon, Republic of Korea
Nanoscale Research Letters 2010, 5:1590-1595 doi:10.1007/s11671-010-9681-3Published: 14 July 2010
For the improved surface plasmon-coupled photoluminescence emission, a more accessible fabrication method of a controlled nanosilver pattern array was developed by effectively filling the predefined hole array with nanosilver colloid in a UV-curable resin via direct nanoimprinting. When applied to a glass substrate for light emittance with an oxide spacer layer on top of the nanosilver pattern, hybrid emission enhancements were produced from both the localized surface plasmon resonance-coupled emission enhancement and the guided light extraction from the photonic crystal array. When CdSe/ZnS nanocrystal quantum dots were deposited as an active emitter, a total photoluminescence intensity improvement of 84% was observed. This was attributed to contributions from both the silver nanoparticle filling and the nanoimprinted photonic crystal array.