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Báo cáo hóa học: " Nanosilver Colloids-Filled Photonic Crystal Arrays for Photoluminescence Enhancement"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Nanosilver Colloids-Filled Photonic Crystal Arrays for Photoluminescence Enhancement | Nanoscale Res Lett 2010 5 1590-1595 DOI 10.1007 s11671-010-9681-3 NANO EXPRESS Nanosilver Colloids-Filled Photonic Crystal Arrays for Photoluminescence Enhancement Seong-Je Park Soon-Won Lee Sohee Jeong Ji-Hye Lee Hyeong-Ho Park Dae-Geun Choi Jun-Ho Jeong Jun-Hyuk Choi Received 29 April 2010 Accepted 30 June 2010 Published online 14 July 2010 The Author s 2010. This article is published with open access at Springerlink.com 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 Introduction Silver nanoparticles which are among the most accessible and optoelectronically functional nanomaterials reported to date can be applied directly to fabricate nanosilver dot S.-J. Park S.-W. Lee S. Jeong J.-H. Lee D.-G. Choi J.-H. Jeong J.-H. Choi Division of Nanomechanical System Research Korea Institute of Machinery Materials Daejeon Republic of Korea e-mail junhyuk@kimm.re.kr H.-H. Park Korea Advanced Nanofab Center Suwon Republic of Korea arrays to produce localized surface plasmon resonance LSPR -coupled fluorescence enhancement. When a surface plasmon is formed on two-dimensional .