Achieving thermally enhanced upconversion emission via lattice distortion and dimer-mediated energy transfer in 0D Mn2+/Yb3+/Er3+-tridoped Cs3BiCl6 perovskites

IF 9.6 1区化学 Q1 CHEMISTRY, APPLIED

Journal of Rare Earths Pub Date : 2026-09-01 Epub Date: 2025-10-24 DOI:10.1016/j.jre.2025.10.012

Zhenbeina Deng, Yusheng Xu, Qiudong Duan, Tianyu Guo, Xianchang Ning, Zhangwen Long, Dacheng Zhou, Qi Wang, Yugeng Wen, Jianbei Qiu

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引用次数: 0

Abstract

Zero-dimensional (0D) halide perovskites inherently exhibit inefficient energy transfer for lanthanide-based upconversion luminescence (UCL) due to isolated structural units. Despite extensive research efforts, the exploration and validation of thermally enhanced UCL in 0D perovskites remain notably limited. This study demonstrates that Mn²⁺/Yb³⁺/Er³⁺ tri-doping can achieve a ninefold enhancement of Er³⁺ UCL in 0D Cs₃BiCl₆ with preferential amplification of green emission. In particular, structural analysis, electron paramagnetic resonance, and steady-state spectroscopies confirm that the formation of Yb³⁺-Mn²⁺ dimers can overcome the limitation of an ultralong interionic distance of 0.774 nm, enabling efficient energy transfer upconversion at elevated temperatures. Furthermore, comparative investigations with one-dimensional (Cs₃Bi₂Cl₉) and three-dimensional (Cs₂NaBiCl₆) perovskites reveal that the pronounced UCL enhancement originates from Mn²⁺-induced lattice distortion and facilitates energy transfer from Yb³⁺-Mn²⁺ dimer to Er³⁺. Finally, the optical thermometry exhibits a high absolute sensitivity of 2.09%/K and outstanding thermal cycling properties in the 313–573 K range, paving the way for optical sensing applications and beyond.

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通过晶格畸变和二聚体介导的能量转移实现0D Mn2+/Yb3+/Er3+三掺杂Cs3BiCl6钙钛矿的热增强上转换发射

由于孤立的结构单元，零维（0D）卤化物钙钛矿在镧系上转换发光（UCL）中表现出低效的能量转移。尽管进行了大量的研究工作，但在0D钙钛矿中热增强UCL的探索和验证仍然非常有限。本研究表明，Mn2+/Yb3+/Er3+三掺杂可以使0D Cs3BiCl6中的Er3+ UCL增强9倍，并优先放大绿色发光。特别是，结构分析、电子顺磁共振和稳态光谱证实，Yb3+-Mn2+二聚体的形成可以克服0.774 nm的超长离子间距离的限制，在高温下实现有效的能量传递上转换。此外，与一维（Cs3Bi2Cl9）和三维（Cs2NaBiCl6）钙钛矿的对比研究表明，明显的UCL增强源于Mn2+诱导的晶格畸变，促进了Yb3+-Mn2+二聚体向Er3+的能量转移。最后，该光学测温仪在313-573 K范围内具有2.09%/K的高绝对灵敏度和出色的热循环性能，为光学传感及其他应用铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Rare Earths 化学-应用化学

CiteScore

8.70

自引率

14.30%

发文量

374

审稿时长

1.7 months

期刊介绍： The Journal of Rare Earths reports studies on the 17 rare earth elements. It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal accepts original high-quality original research papers and review articles with inventive content, and complete experimental data. It represents high academic standards and new progress in the RE field. Due to the advantage of abundant RE resources of China, the research on RE develops very actively, and papers on the latest progress in this field emerge every year. It is not only an important resource in which technicians publish and obtain their latest research results on RE, but also an important way of reflecting the updated progress in RE research field. The Journal of Rare Earths covers all research and application of RE rare earths including spectroscopy, luminescence and phosphors, rare earth catalysis, magnetism and magnetic materials, advanced rare earth materials, RE chemistry & hydrometallurgy, RE metallography & pyrometallurgy, RE new materials, RE solid state physics & solid state chemistry, rare earth applications, RE analysis & test, RE geology & ore dressing, etc.