journal article·2026-01Open access

Fe 3+ ‐Activated Near‐Infrared Mechanoluminescence in Double Perovskite Compound

Jieni Ning, Sheng Wu, Binli Xiao, Weiwei Chen, Quan Dong, Yao Xiao, Zhiyao Zhou, Puxian Xiong, Yinzhen Wang

Advanced Optical Materials· Volume 14· Issue 4

Abstract

Abstract Near‐infrared mechanoluminescence (NIR ML) materials, owing to the unique force‐to‐light conversion characteristics, have attracted considerable attention, such as in bioimaging and structural health monitoring fields. However, current NIR ML materials are limited to a restricted selection of activators, which significantly hinders their practical applications. Herein, a series of Fe 3+ ‐activated double perovskite broadband emission NIR MLs are prepared (A 2 BB'O 6 :Fe 3+ ). Among them, Sr 2 ScSbO 6 :Fe 3+ has broadband NIR ML covering 800–1000 nm at a low activation threshold ≈1 N, while maintaining strong emission and reasonably stable cycling performance even at 573 K. Thermoluminescence measurements and density‐functional‐theory calculations identify the defect type and distribution of Sr 2 ScSbO 6 :Fe 3+ . The host exhibits a continuous distribution of shallow‐to‐deep defects (0.02–0.97 eV). These defects efficiently quench persistent luminescence and ambient‐light interference, enabling a robust NIR ML noise‐signal ratio. In addition, such NIR ML emission has bio tissue penetration ability, showing potential bio stress‐related application imaging prospects.
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Research context

OpenAlex topics: Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials School of Physics South China Normal University Guangzhou 510006 P. R. China

School of Optoelectronic Engineering Guangdong Polytechnic Normal University Guangzhou 510665 P. R. China

Key Laboratory of Testing and Tracing of Rare Earth Products State Administration for Market Regulation Jiangxi University of Science and Technology Ganzhou 341000 P. R. China

School of Materials Science and Engineering South China University of Technology Ganzhou 510006 P. R. China

School of Physics and Optoelectronics Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices The State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. China

Department of Electrical and Electronic Engineering The University of Hong Kong Hong Kong 999077 P. R. China

State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 P. R. China

Funding

National Natural Science Foundation of China · State Key Laboratory of Powder Metallurgy

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