Eu³⁺ doped down shifting TiO₂ layer for efficient dye-sensitized solar cells

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• 作者：Vinod Kumar^a ; ^b ; ^{vinod.phy@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Sanjay Kumar Swami^a ; Anuj Kumar^a ; O.M. Ntwaeaborwa^b ; Viresh Dutta^a ; H.C. Swart^b
• 关键词：Down-shifting ; Defects ; XPS ; DSSC
• 刊名：Journal of Colloid and Interface Science
• 出版年：2016
• 出版时间：15 December 2016
• 年：2016
• 卷：484
• 期：Complete
• 页码：24-32
• 全文大小：2771 K

文摘

Europium doped TiO₂ (TiO₂:Eu³⁺) down-shifting (DS) nanophosphors (NPrs) were synthesized by the solution-combustion method with different concentrations of Eu³⁺. The X-ray diffraction results confirmed the formation of a polycrystalline tetragonal structure of the TiO₂. The emission of colour of the TiO₂:Eu³⁺ DS NPr was tuned by varying the doping concentration of Eu³⁺. The photoluminescence results confirmed that the TiO₂:Eu³⁺ DS NPrs converted the UV light into visible light by energy down-conversion process, i.e. down-shifting of high energy UV photons to low energy visible photons. These TiO₂:Eu³⁺ DS NPrs were used to enhance the efficiency of the Dye sensitized solar cell from 8.32% to 8.80%.