Solution-Processable Nanocrystal-Based Broadband Fabry-Perot Absorber for Reflective Vivid Color Generation
- Authors
- Kim, Soo Jung; Choi, Hyun-Kyung; Lee, Heon; Hong, Sung-Hoon
- Issue Date
- 20-2월-2019
- Publisher
- AMER CHEMICAL SOC
- Keywords
- Fabry-Perot; broadband absorber; nanocrystal; reflective color; silver nanocrystal; optical loss
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.11, no.7, pp.7280 - 7287
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 11
- Number
- 7
- Start Page
- 7280
- End Page
- 7287
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/67602
- DOI
- 10.1021/acsami.8b19157
- ISSN
- 1944-8244
- Abstract
- Structural reflective colors based on Fabry-Perot (F-P) cavity resonances have attracted tremendous interest for diverse applications, such as color decoration and printing, display, and imaging devices. However, the asymmetric F-P cavity-based reflective colors proposed to date have low color purity and have difficulty to realize a desired vivid color because of a narrow absorption band characteristic in the visible light region. Here, a solution-processed, F-P ultra-broadband light absorber is newly proposed using a high lossy nanoporous material for vivid color generation. An asymmetric metal-insulator-metal structure consists of a high lossy nanoporous metallic film with coupled silver nanocrystals (Ag NCs) as the top layer. The absorbers not only increase the maximum absorption intensity up to similar to 98% but also widen the bandwidth by 300 nm, resulting in high color purity in micrometer-scale pixels. Furthermore, the solution-based absorber shows potential to realize a high-resolution display pixel and anticounterfeiting devices having mechanical flexibility using the inkjet printing technology.
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