Green upconversion improvement of TiO2 codoped Er3+-Yb3+ nanoparticles based thin film by adding ALD-Al2O3 for silicon solar cell applications - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Luminescence Année : 2022

Green upconversion improvement of TiO2 codoped Er3+-Yb3+ nanoparticles based thin film by adding ALD-Al2O3 for silicon solar cell applications

Résumé

This paper investigates the upconversion luminescence modification of codoped nanoparticles with lanthanides ions based thin films through adding a coating. First, these nanoparticles based thin films composed of Er 3+-Yb 3+ co-doped anatase-TiO 2 are prepared using spin coating technique supported by a design of experiment (DOE) approach with the Hadamard matrix of order 4 to improve the deposition conditions. For the coating step, different thicknesses of Al 2 O 3 layer are realised by thermal atomic layer deposition (T-ALD) onto the surface of Er 3+-Yb 3+ co-doped anatase-TiO 2 nanoparticles based thin films. The results show that the ALD-Al 2 O 3 coating can benefit the luminescence properties of the upconversion nanoparticles based thin films. Thin ALD-Al 2 O 3 (10 nm) coated stack exhibits similar upconversion luminescence as the uncoated nanoparticles based film but insures also their stability. Meanwhile, for 100 nm ALD-Al 2 O 3 coating, enhancement of the upconversion green emission by 98 % at the expense of the red emission compared to uncoated sample is observed. This results are promising to be applied in photovoltaics field.

Domaines

Matériaux
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Dates et versions

hal-03807670 , version 1 (10-10-2022)

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Fatma Trabelsi, Frédéric Mercier, Elisabeth Blanquet, Alexandre Crisci, Raphael Boichot, et al.. Green upconversion improvement of TiO2 codoped Er3+-Yb3+ nanoparticles based thin film by adding ALD-Al2O3 for silicon solar cell applications. Journal of Luminescence, 2022, 252, pp.119282. ⟨10.1016/j.jlumin.2022.119282⟩. ⟨hal-03807670⟩
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