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Open Access NANO EXPRESS

Nanosilver Colloids-Filled Photonic Crystal Arrays for Photoluminescence Enhancement

Seong-Je Park1, Soon-Won Lee1, Sohee Jeong1, Ji-Hye Lee1, Hyeong-Ho Park2, Dae-Geun Choi1, Jun-Ho Jeong1 and Jun-Hyuk Choi1*

Author Affiliations

1 Division of Nanomechanical System Research, Korea Institute of Machinery & Materials, Daejeon, Republic of Korea

2 Korea Advanced Nanofab Center, Suwon, Republic of Korea

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Nanoscale Research Letters 2010, 5:1590-1595  doi:10.1007/s11671-010-9681-3

Published: 14 July 2010

Abstract

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.

Keywords:
Silver nanoparticles; Photonic crystal; Localized surface plasmon resonance (LSPR); Nanoimprint