| 학회 | 한국재료학회 |
| 학술대회 | 2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 | 26권 1호 |
| 발표분야 | F. 광기능/디스플레이 재료 분과 |
| 제목 | Realization of Reflective Color Generation and Controllable absorption in Near-Infrared Based on Active Nanocrystal Metamaterials Absorber |
| 초록 | The conventional color was realized by dye or organic paints. But these colors be vulnerable to Ultra-Violet light, discoloration occurs over time. To solve this problem, the structural color was proposed. To implement the structural color, An absorber is needed that can reflect a selective wavelength. The representative optical absorber is used Fabry-Perot structure. Conventional absorber has fixed optical properties after fabricated. To make up for these limitations, researchers used to Nanocrystal to tune material properties [1] or, an intuitive approach using phase change material (PCM) [2,3]. In the case of nanocrystals, the optical properties of the material can be changed, only in before fabrication, and the bulk PCM has a disadvantageous that is difficult to apply due to its large optical loss. In this study, we demonstrated a flexible reflective color filter with changeable Near-Infrared (NIR) absorption based on the solution-processable that without annealing process Vanadium dioxide (VO2) nanocrystal absorber. In this case, the optical loss can be controlled by only the nanocrystal size, and thickness without lost a phase change property. Based on these advantages, the main additive colors with NIR controllable absorption has been demonstrated. Furthermore, we exploit advanced VO2 that W-doped in which phase change temperature can be drastically reduced, it can be expected for anti-counterfeiting technology and display industry. Acknowledgments This work was financially supported from Samsung Research Funding & Incubation Center of Samsung Electronics (SRFC‐IT1901‐05). Reference [1] S. J. Kim. et al. ACS Materials & Interfaces, 6, 25496 (2016) [2] F.Z. Shu et al. Advanced Optical Materials 6, 7 (2018) [3] F. Liu et al. Applied Optics, 57, 30 (2018) |
| 저자 | 고병수1, Trevon badloe2, 노준석2, 홍성훈1 |
| 소속 | 1한국전자통신(연), 2포항공과대 |
| 키워드 | <P>Metamaterial; Phase change material (PCM); Nanocrystal; Light-absorber</P> |
