Synthesis and upconversion emission properties of Pb0·9La0·1TiO3:Yb, Tb inverse opals by sol-gel technique. (1st July 2013)

• Record Type: Journal Article
• Authors: Yang, Z W; Yan, D; Song, Z G; Yu, X; Zhou, D C; Yang, Y; Yin, Z Y; Yan, L; Qiu, J B
• Is Part Of: Materials technology. Volume 28:Number 4(2013)
• Page Start: 187
• Page End: 191
• Publication Date: 2013-07-01
• Subjects: Materials -- Periodicals; Materials science -- Periodicals; Materials -- Technological innovations -- Periodicals; 620.1105
• DOI: 10.1179/1753555712Y.0000000046
• Languages: English
• ISSNs: 1066-7857

Abstract

<abstract> <title> <x xml:space="preserve">Abstract</x> </title> <p>Inverse opal photonic crystals of Yb³⁺, Tb³⁺ codoped Pb_0·9La_0·1TiO₃ were synthesised by a sol-gel technique in combination with a self-assembly method. Opal template was self-assembled from suspensions of monodisperse polystyrene microspheres with a mean diameter of 400 nm via a vertical deposition process. After infiltrating the Yb³⁺, Tb³⁺ codoped Pb_0·9La_0·1TiO₃ sol into the opal template, the polystyrene microspheres were removed by calcination at 670°C, and Yb³⁺, Tb³⁺ codoped Pb_0·9La_0·1TiO₃ inverse opal photonic crystals were formed. The effect of photonic band gap on upconversion emissions was investigated in the Yb³⁺, Tb³⁺ codoped Pb_0·9La_0·1TiO₃ inverse opals. Significant suppression of the upconversion emission was detected if the photonic band gap overlapped with the Tb³⁺ ions emission band, leading to colour tuneable upconversion photonic crystals with applications in solid state colour displays.</p> </abstract>