High-purity reflective color filters based on thin film cavities embedded with an ultrathin Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> absorption layer
Junho Lee, Jaeyong Kim, Myeongkyu Lee
Abstract
layer in a high-intensity region within the insulator and thereby create another absorption band in addition to the cavity resonance mode. When combined with the refractive-index engineering of the metal layer, this approach leads to red, green, and blue colors having a bandwidth of ∼100 nm and a reflection efficiency of 90%. The results of the study may be effectively utilized in numerous applications, including reflective color filters, colorimetric sensors, and surface decorations.
Topics & Concepts
Materials scienceOptoelectronicsOpticsReflection (computer programming)StackingRefractive indexColor filter arrayStructural colorationThin filmLayer (electronics)Color gelPhotonic crystalNanotechnologyPhysicsProgramming languageThin-film transistorNuclear magnetic resonanceComputer sciencePhotonic Crystals and ApplicationsMetamaterials and Metasurfaces ApplicationsOptical Coatings and Gratings