| 학회 | 한국재료학회 |
| 학술대회 | 2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 | 23권 1호 |
| 발표분야 | 7. 플라즈모닉 소재의 응용(Applications of Plasmonic Materials) |
| 제목 | Near-IR Detection via Plasmonic Architectures |
| 초록 | In this presentation, we discuss the upconversion luminescence (UCL) enhancement of β-NaYF4:Yb3+/Er3+ nanocrystals using plasmonic nanostructures and discuss near-infrared detection and application devices using this phenomenon. This UCL process is a phenomenon in which light of low energy is converted into light of high energy. Recently, many studies have been made on the possibility of application to a solar cell, a photodetector, and a bioimaging, etc. However, in spite of much research to date, the internal quantum efficiency of the UCL process is still very low, which makes it difficult to put practically produced devices into practical use. In order to solve such a problem, researches for increasing the UCL efficiency by introducing plasmonic nanostrucrtures have been continued. Recently, we reported that the UCL can be amplified more than 1000 times by employing metal-insulator-metal (MIM) structures with random Ag nanoparticles, and furthermore proposed a novel near-infrared photodetector using this architecture [1]. Also, by applying UC nanocrytals to a plasmonic structure using a random array of Ag nanowires, we developed an anti-counterfeit film that can not be recycled using plasmonic properties excited only under certain conditions [2]. Moreover, through this study, the mechanism of the enhanced UCL efficiency using plasmonic phenomenon has been theoretically and experimentally proved. Reference [1] Seok Joon Kwon, Gi Yong Lee, Kinam Jung, Ho Seong Jang, Joon-Suh Park, Honglyoul Ju, Il Ki Han, and Hyungduk Ko, Adv. Mater., 2016, 28, 7899. [2] Kisun Park, Kinam Jung, Seok Joon Kwon, Ho Seong Jang, Dongjin Byun, Il Ki Han, and Hyungduk Ko, Adv. Funct. Mater., 2016, 26, 7836. |
| 저자 | 고형덕 |
| 소속 | 한국과학기술(연) |
| 키워드 | Plasmon; Upconversion; Near-IR; Photodetector; Anti-counterfiet Film |
