Strong red upconversion luminescence of Yb3+/Er3+ co-doped Bi2O3 phosphors for optical thermometry

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-03-01 DOI:10.1016/j.ceramint.2024.12.329

Xiangyue Liu , Bing Li , Bin Duan , Shiying Guo , Shengli Zhang , Nan Meng , Zhaoyang Lou , Tong Liu , Junshan Hu , Hong Ge

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Abstract

Bi₂O₃ phosphors co-doped with Yb³⁺ and Er³⁺ ions were successfully synthesized using a high-temperature solid-state method. Under 980 nm near-infrared laser excitation, Bi₂O₃: Yb³⁺/Er³⁺ phosphors emit strong red light at 658 nm and weak green light at 551 nm. The optimal doping concentrations of Yb³⁺ and Er³⁺ are 0.10 and 0.02, respectively. This composition results in a red-to-green intensity ratio of 157.6. The red emission is primarily driven by energy transfer, promoting Er³⁺ from the ⁴I_13/2 level to the ⁴F_9/2 level [Yb³⁺ (²F_5/2) + Er³⁺ (⁴I_13/2) → Yb³⁺ (²F_7/2) + Er³⁺ (⁴F_9/2)]. The cross-relaxation process lowers the photon population in the ⁴F_7/2 level and raises the photon population in the ⁴F_9/2 level, leading to the occurrence of a single-band red emission. This phosphor also demonstrates promising potential for optical temperature sensing. It exhibits a maximum relative sensitivity of 3.02 % K⁻¹ at 298 K.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.