Up-conversion enhancement in Er3+/ Yb3+ doped 1-D microcavity based on alternating aluminosilicate glass and titania sol-gel layers. Issue 16 (November 2020)

• Record Type: Journal Article
• Authors: Rojas-Hernandez, Rocío Estefanía; Santos, Luís F.; Almeida, Rui M.
• Is Part Of: Ceramics international. Volume 46:Issue 16(2020)Part B
• Page Start: 26273
• Page End: 26281
• Publication Date: 2020-11
• Subjects: Aluminosilicate/titania phosphors -- Er3+/Yb3+ doping -- Sol-gel layers -- Up-conversion -- Photonic crystal microcavity; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.12.248
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Enhancement of luminescence properties to improve and/or control both the absorption and emission of lanthanide (Ln)-activated glasses, ceramics and glass-ceramics, can be achieved with the development of smart photonic systems. Among different possible strategies, a prospective proof of concept for photoluminescence (PL) enhancement based on a one-dimensional photonic crystal (PC) was designed to tailor the up-conversion (UC) emission of Er 3+ from a microcavity (MC) with an aluminosilicate glass film co-doped with Er 3+ /Yb 3+ sandwiched between alternating layers of undoped aluminosilicate and TiO2 . For the fabrication, the layers of different materials were deposited by sol-gel (SG), in order to mimic the PC structure obtained by simulation for a pre-defined position of the pass band defect (547 nm) within the stop band. An enhancement of up to 13 times of the Er 3+ green UC was observed for the MC in comparison with a system without the PC structure. Graphical abstract: Image 1